LB-115 : Provide the UI design for Image type of post

Early stages
Merge remote-tracking branch 'origin/devel' into lb-115-image-type-post
NR-885: New Article -> It is not possible to scroll up and to edit the header labels any more

CSS fixed +  standard CSS changes update
LB-115:Provide the UI design for Image type of post

Intermediate
Merge branch 'lb-115-image-type-post' into devel
NR-885 : New Article -> It is not possible to scroll up and to edit the header labels any more

Fix + standard css update
Small gateway bug fix to report also invalid authorizations.
Another gateway small bug fix
NR-901 : Button alignment problem
LB-431: Internationalization issues

fixed for javascript also added the utf8 support.
LB-431: Internationalization issues

fix for str.format also.
Added error headers for error reporting.
CSS updates for Desks
Small CSS bug on article edit screen

Fixed small bug with menu positioning inside media tab image item
fix
Merge branch 'devel' of git://github.com/sourcefabric/Ally-Py into devel
LB-440 : Unnecessary scroll bar in Media info dialogue
NR-894 : Buttons for switching font format don't refresh before input anything

x
LB-455 : Login input cells are partially cut off in 1024*768 screen resolution
Merge branch 'devel' of git://github.com/sourcefabric/Ally-Py into devel