add zh translation & fix bootstrap errors
updated translations
Merge branch 'zh-han' of https://github.com/g0v/Airesis into version_2_9

Conflicts:
	config/locales/en.yml
	config/locales/it-IT.yml
fixed homepage flags
missing files
fucking fix for devise
fixed a security issue...sometime I think to be retarded...
Merge branch 'version_2_9_2' of github.com:coorasse/Airesis into version_2_9_2
merge