add Label validations; add attr_accessible
[#369] project issues page: labels
[#369] remove old labels js code
[#369] remove old labels partial
rollback changes and fixed specs
Merge branch '369-bootstrap' of abf.rosalinux.ru:abf/rosa-build into 369-bootstrap
#369: updated specs
#369: updated autocompletes_controller_spec, groups/members_controller_spec, projects/hooks_controller_spec