Multi bug fixes and implementations

*Plugins
- Update of plugins
- Added useful plugin: underconstruction
- bug fix for widget Context Antenna
*Theme
- Added Number of events displayed on homepages (country and antennas)
- Added .TV social network
- Possibility to choose any category for homepages (not depending on level)
- Changed sort order of posts/events
*Languages
- Updated French
- Updated Turkish

Signed-off-by: anou <anou@smol.org>