Corrected default values for MODELTRANSLATION_LANGUAGES in settings
Merge pull request #1539 from gamesbook/lang

Corrected default values for MODELTRANSLATION_LANGUAGES in settings
Patch for issue #1528
Documentation patch for issue #1528
Merge pull request #1540 from gamesbook/layer

Patch for #1528
Add layer attributes to remote service layers
Recommit changes to layer_detail page
A few bug fixes
Merge pull request #1541 from mbertrand/services_gn2

Add layer attributes to remote service layers
fix group list and group detail