[TASK] Update copyright year to 2013

Resolves: #46085
Releases: 6.1, 6.0, 4.7, 4.6, 4.5
Change-Id: I970078281d129be8ffef0bef128b23354ce59ddd
Reviewed-on: https://review.typo3.org/18783
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[TASK] Update copyright year to 2013

Resolves: #46085
Releases: 6.1, 6.0, 4.7, 4.6, 4.5
Change-Id: I3e99389587ffc3808239bfa2da70670a07fa44be
Reviewed-on: https://review.typo3.org/18787
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny
[BUGFIX] Clearing cache from toolbar fails in IE8

Fix for regression in #45595 that was introduced with #36364
IE8 does not pass the click event to the handler function and thus
raises a JavaScript error. The event can be fetched from the window
object in this case.

Fixes: #45595
Releases: 6.1, 6.0, 4.7, 4.6, 4.5

Change-Id: I9ccd5c8ae660a34e404122d9dd1c816909688b3e
Reviewed-on: https://review.typo3.org/18796
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Install Tool: Error message gives wrong info

Based on issue #45135 the change not only includes the
check for the variable length for typo_db_password, but
for typo_db, typo_db_host and typo_db_username as well.

Resolves: #45135
Releases: 4.5,4.7,6.0,6.1
Change-Id: Id32bac0597091f8bfb823dcfb700814bb138fa12
Reviewed-on: https://review.typo3.org/18324
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Wrong cmd example in INSTALL.txt

The INSTALL.txt file has an example on how to create a link
in Windows using the MKLINK command.

Unfortunately the parameters in the example have the wrong order.

Resolves: #46119
Releases: 6.1, 6.0, 4.7, 4.5
Change-Id: Ida960d79e0144c15afdd7c21a9cd35466ec24545
Reviewed-on: https://review.typo3.org/18808
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] RTE: Empty paragraphs are not correctly transformed

Problem: Empty paragraphs entered in the RTE may get lost on way to
database if no block is found in content, as well as on way to the RTE
if followed by a block.
Solution: Fix both transformations and add multiple unit test cases.

Change-Id: I6c5495fb668f29267bcdeb7b44814a4bb9dc0f96
Releases: 4.5, 4.7, 6.0, 6.1
Resolves: #36904
Reviewed-on: https://review.typo3.org/18800
Reviewed-by: Stanislas Rolland
Tested-by: Stanislas Rolland
Merge remote-tracking branch 'forge/TYPO3_4-7' into TYPO3_4-7