[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
[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
[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