Tagged 2.4.12
Merge tag '2.4.12' into 2.4
Merge tag '2.4.13' into 2.4
Fix empty $messageBlock on CheckboxFields

From 2.4.13 the Message attribute is set to Text, so every checkbox now show an empty $messageBlock,
See https://github.com/silverstripe/silverstripe-framework/issues/2489 or http://www.silverstripe.org/general-questions/show/25254
Merge pull request #2716 from gbonanome/patch-1

Fix empty $messageBlock on CheckboxField
BUGFIX: URL '/' ending up beeing redirected to '//'
Merge pull request #2728 from xini/2.4

BUGFIX: URL '/' ending up beeing redirected to '//'
BUG: Stop undefined error for $reEnableFilter being thrown

NEW: Switched reEnsbleFilter fix to match coding convention
Merge pull request #2790 from silverstripe-rebelalliance/reEnableFilter

BUG: Stop undefined error for $reEnableFilter being thrown
Merge remote-tracking branch 'upstream/2.4'