[BUGFIX] Improve output for "deprecated RTE properties" updater

When running the update wizard for "Deprecated RTE properties in Page
TSconfig" the output contains html tags which are htmlspecialchared.
Furthermore the output of the custom messages is corrected to show the
information when available.

Resolves: #53710
Releases: 6.2
Change-Id: Ia488d0fd0368c318617bb245a0f9fcd25099506b
Reviewed-on: https://review.typo3.org/25472
Reviewed-by: Alexander Opitz
Tested-by: Alexander Opitz
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
[BUGFIX] Install System Extensions in update wizard fails

In the update wizard it isn't possible to install any system extension
because the PackageManager isn't initialized. During bootstrap only the
class FilesafePackageManager is loaded and registered. This patch
registers the initialized FailsafePackageManager as singleton instance.

Resolves: #53708
Releases: 6.2
Change-Id: I9eb9ab8ac1fd655fd642e386cd51895f1d8c1e21
Reviewed-on: https://review.typo3.org/25467
Reviewed-by: Thomas Maroschik
Tested-by: Thomas Maroschik
Reviewed-by: Steffen Müller
Tested-by: Steffen Müller
[TASK] Improve code style of RelationHandler class

* add missing class properties, that are used in the code
* fix invalid PHPDoc variable types
* remove unused variables
* fix or remove invalid return values
* fix invalid variable types
* make sure unused variables are initialized

Resolves: #53718
Releases: 6.2
Change-Id: I90c1b73d0a4a7bb4666679e772805460786c805d
[BUGFIX] Create valid sys_file refindex data

This patch prevents the creation of sys_refindex entries that point to no
table and no record.

Additionally it fixes the creation of sys_refindex records for sys_file
relations.

Resolves: #53712
Releases: 6.2, 6.1, 6.0
Change-Id: Ic864ade10e4e97fbd9017b9c779be68d911dd626
[FEATURE] Custom active tab in RTE element browser

Introduce a flag that prevents the element browser of rtehtmlarea
from overwriting the active tab that was set by a hook object.

Resolves: #49036
Releases: 6.2
Change-Id: Iebfda39714caa98c0d2023992bbf63a2f5b9b01a
[TASK] Non extension dirs in llXmlAutoFilename

Allow non extension dirs (e.g. fileadmin) in
\TYPO3\CMS\Core\Utility\GeneralUtility::llXmlAutoFilename()

Fixes: #34728
Releases: 6.2, 6.1, 4.7, 4.5
Change-Id: I073f42ec8b6d733246151df331201031187e1baf
[FEATURE] Allow escaping of dots in TypoScript key

This patch allows the use of backslashes to escape
dots in TypoScript keys, for example:

my\.escaped\.key = test

will result in a single key "my.escaped.key" with the
value "test".

Resolves: #29461
Releases: 6.2
Change-Id: If830c67c4a35ec023b03f208e1c7131ce57b27b8
[BUGFIX] Correct order of key / field deletion

Prevent a SQL error when deleting a key and the field belonging
to the key in the install tool at the same time.

Therefore the order for deleting keys and fields is changed from
field first and key second to key first and field second.

Resolves: #50450
Releases: 6.2
Change-Id: I30aff6ea6c2bf01dec6197eec8fd3aa7306cfcbb
[BUGFIX] Prevent exclude field mixup in FromEngine

Use a local variable for storing the excluded fields in the
FormEngine to prevent the configuration from being overwritten
by the inline form element renderer.

Fixes: #47359
Releases: 6.1, 6.0, 4.7, 4.5
Change-Id: I5a7a2de16d767f854b4d3f89d599deec28266092

Conflicts:
	typo3/sysext/backend/Classes/Form/FormEngine.php
[BUGFIX] Manpulation of file field migration config

This patch introduces new methods to the FrontendContentAdapterServer
that allow the manipulation of the file field migration configuration.
It is now possible to add additional (content) types for which the
migration should be active and to add custom migration configurations.

Resolves: #46067
Change-Id: Ibc23be8a414192c8795d9bb4f09316cf608e240b
[BUGFIX] URL encode special characters in getPublicUrl()

The FAL method getPublicUrl() in the ResourceStorage should return a
valid URL. To archive this special characters and spaces are URL
encoded in the LocalDriver.

Resolves: #52806
Change-Id: If1f3b6513b6feb0f24cd91be6998a686b54c467e
[TAKS][CONF] Accept other settings in [SYS][setDBinit]

Since the mysqli interface recommends setting the charset using the
mysqli API the utf8 charset will be initialized when establishing the
database connection using mysqli_set_charset().

Additionally [SYS][setDBinit] can now be set to any value or can totally
be removed. To make sure the database connection still uses the utf8
encoding an additional check is added to the bootstrap process that
checks the MySQL character set session variables.

Finally the old default value of [SYS][setDBinit] will automatically be
removed if it is set to the old default value.

Resolves: #41596
Releases: 6.2
Change-Id: I8d0a9eba50495d52accb59627147c1c87b6a9bb5
[BUGFIX] Correct file language overlay for pages

This patch corrects the fields the FILES content object is using for
doing the language overlay for file references for fields in the pages
table.

Instead of the _LOCALIZED_UID that is only available for other record
types the _PAGES_OVERLAY_UID field is now used to check if there
is a translated version available.

Resolves: #47869
Releases: 6.2, 6.1, 6.0
Change-Id: I2465a9e3ccd49223cc44885ffba8484788e1b669
[BUGFIX] Correct handling of empty Backend Layouts

Since the default value of the page properties backend_layout and
backend_layout_next_level is an empty string the value in the select
item is changed from zero to an empty string for consistency.

Additionally the BackendLayoutView will treat an empty string equally
as a zero namely as a non set Backend Layout.

Resolves: #52596
Releases: 6.2
Change-Id: Ic792f748d005f5749f24a3e979b304c23320c8fa
[TASK] Reusable getCategoryFieldsForTable itemsProcFunc

Allow the usage of the method
\TYPO3\CMS\Core\Category\CategoryRegistry->getCategoryFieldsForTable
that can be used as itemsProcFunc for select fields in the TCA in
multiple context by introducing a new categorizedTable configuration key
in the config section of a column in the TCA.

This configuration key can either consist of a single string containing
the name of the table or a configuration array to define additional
conditions that need to be true so that a configured table is used.

Resolves: #53045
Releases: 6.2
Change-Id: I128cbeb6747a8f83e68cdaaaafbc3ab5901353d4
[BUGFIX] Followup Fluid Template Fallback paths

In the previously merged patch are some glitches and a regression:
- The usage (and test for existence) of deprecated functions has been
  removed.
- The value passed by the old behaviour overrides the new one
- The typo preventing usage setLayoutPaths() has been removed.

Intended usage:
plugin.tx_a.view.templateRootPaths{
	extendedA = <some additional path>
	default = <some default path>
}
The first hit will be used as template.
In case only numeric indizes are used, the entries get ordered.
See unit tests for a more specific description.

Change-Id: If4fa75347614cf9b352c6016430a928833cc62cd
Resolves: #52971
Releases: 6.2
[TASK] Unify data for jump URL hash generation

The jump URL generation is unified and moved to a new JumpUrlUtility
class. All methods in the ContentObjectRenderer are now using the same
method for creating jump URLs.

The handling of file and directory names with special characters is
improved and FAL file records with special characters in their file names
will also be URL encoded.

Additionally Unit Tests are added to verify the jump URL function.

Resolves: #52156
Releases: 6.2
Change-Id: I7d2d8cec005aae56a118850071ca669ef9740c9d
[BUGFIX] PackageManager in impexp extension select

Replace invalid usage of old $TYPO3_LOADED_EXT array with calls to the
PackageManager in the extension selector of the impexp Extension.

Resolves: #53122
Releases: 6.2
Change-Id: Ie2b715986a0803c26e3fd0ae891dedce5ddc634d
[BUGFIX] Allow NULL values in INSERT queries

Currently only UPDATE queries pass the $allowNull parameter to the
fullQuoteStr() method in the DatabaseHandler. To make the behavior of
both methods consistent and to allow NULL values during creation of
new records by TCEmain the $allowNull parameter is also set to TRUE for
INSERT queries.

Resolves: #53662
Releases: 6.2, 6.1, 6.0
Change-Id: I066b9880a557b6c9058fc15f467631f1313300f9
[WIP][FEATURE] Allow continuous content record numbers

The CONTENT and the RECORDS content objects get a new setting called
continuousRecordNumbers.

If this setting is enabled the record counter in child content objects
will not be reset but continue counting. The parent content object
will then continue counting at the final count of the child content
object.

WIP: To have a clean counting it might be useful to disable the counter
for child CONTENT and RECORDS content object. In this way it would be
possible to use a even / odd class correctly. This setting can either
simply depend on continuousRecordNumbers or can also be an additional
setting (e.g. excludeContentObjectTypesFromCounting).

Resolves: #53717
Releases: 6.2
Change-Id: I3d1f9da6a12b9eb8d631350689f5a7c1f7ace3e5