update themes and theme generator
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Theme generator update
Small refactoring about the user creation.
delete some return null
Fixed wrong method call
Merge pull request #4 from ngodfraind/zip-special-char

ZipArchive encoded with ISO-8859-1
Merge pull request #5 from kitan1982/master

Added self-registration checkbox in workspace creation form. Issue #291
Merge pull request #6 from ngodfraind/send-mail-on-user-creation

Small refactoring about the user creation.
Merge pull request #7 from stefk/master

Fixed wrong method call
Fixing administration invert widget visible.
Merge pull request #8 from ngodfraind/master

Fixing administration invert widget visible.
theme generator update
Merge pull request #3 from solispauwels/master

Update themes and theme generator
An error is displayed if a file too large is uploaded with drag&drop.
Fixed theme generator
Merge pull request #10 from ngodfraind/post-size-limit

An error is displayed if a file too large is uploaded with drag&drop.
Merge pull request #11 from stefk/master

Fixed theme generator