FileExists ViewHelper against Exception with f:img
[BUGFIX] Fix letter only HTML5 regex

The regular expression for validation letter only strings
now allows any number of characters.

Resolves: #58966
Releases: 2.1
Change-Id: I847c05b91a5a12fe2ba6e0c1cec24e86ff3cbf77
Reviewed-on: https://review.typo3.org/30236
Reviewed-by: Alex Kellner
Tested-by: Alex Kellner
Bug #58949
FieldRepository must not respect sys_language_uid in findByUids()
RST Documentation
RST Documentation
Merge remote-tracking branch 'origin/Documentation' into Documentation

Conflicts:
	Documentation/ForEditors/AddANewForm/Images.txt
	Documentation/ForEditors/AddANewForm/Index.rst
	Documentation/Images/manual_html_265616b6.png
	Documentation/Images/manual_html_664a7b4a.png
	Documentation/Images/manual_html_6d7a0c1e.png
	Documentation/Images/manual_html_752d3b4a.png
	Documentation/Images/manual_html_7b6525cf.png
	Documentation/Images/manual_html_m2c41aef5.png
	Documentation/Images/manual_html_m2ccc0be1.png
	Documentation/Images/manual_html_ma474bb5.png
Merge remote-tracking branch 'origin/Documentation' into Documentation

Conflicts:
	Documentation/ForEditors/AddANewForm/Images.txt
	Documentation/ForEditors/AddANewForm/Index.rst
	Documentation/Images/manual_html_265616b6.png
	Documentation/Images/manual_html_664a7b4a.png
	Documentation/Images/manual_html_6d7a0c1e.png
	Documentation/Images/manual_html_752d3b4a.png
	Documentation/Images/manual_html_7b6525cf.png
	Documentation/Images/manual_html_m2c41aef5.png
	Documentation/Images/manual_html_m2ccc0be1.png
	Documentation/Images/manual_html_ma474bb5.png
Merge remote-tracking branch 'origin/Documentation' into Documentation

Conflicts:
	Documentation/ForEditors/AddANewForm/Index.rst
	Documentation/Images/manual_html_6d7a0c1e.png
	Documentation/Images/manual_html_m2c41aef5.png
	Documentation/Images/manual_html_ma474bb5.png
RST Documentation - Step 2
RST Documentation - Step 3
RST Documentation - Step 4
Small Fix in Backend Reporting Overview
RST Documentation - Step 5
Small Language Fix in Form Overview
RST Documentation - Step 6
RST Documentation - Step 7
RST Documentation - Step 7
RST Documentation - Step 8
Removed unused constant dateFormat
RST Documentation - Step 9