This fixes the double scrollbars issue
Add custom hex2bin implementation for 5.3

Fixes https://github.com/owncloud/core/issues/11004
fix notification visibility, fix #11016
Merge pull request #11006 from owncloud/addCustomHex2BinImplementationBecauseSupporting53IsSomethingReallyReallyCoolAndWeAreObviouslySomeOfTheCoolGuys

Add custom hex2bin implementation for 5.3
Do not double decode values

Fixes https://github.com/owncloud/core/issues/11012
improve style of checkmark icon, less bold, fitting ownCloud style
fix size of toggle icon, make container square
fix svg of calendar filetype icon
fix folder icon alignment, fix #10866
Merge pull request #11018 from owncloud/fix-notification-layer

fix notification visibility, fix #11016
fix nojavascript message alignment
Merge pull request #11022 from owncloud/icons-fix

Fix icons
Merge pull request #11024 from owncloud/fix-nojavascript

fix nojavascript message alignment
[tx-robot] updated from transifex
content size checks are not valid for LOCK
Return false in case one of the values is null
Merge pull request #11043 from owncloud/test-againstNull

Return false in case the passed values are not of type string
remove 'set -e' - causes issues during ci execution
Merge pull request #10974 from owncloud/fix-app-content-overflow

This fixes the double scrollbars issue
Remove passing by reference to allow for proper GC

The garbage collector in PHP 5.3.10 does not properly release the file
handle when calling fclose() due to the fact that it is passed by
reference.
This has the side-effect of preventing file locks to be released as well
when the files_locking app is enabled.

This fix removes the useless passing by reference and now the file
handle and file lock are freed properly.