Merge branch 'hotfix/fix_images' into develop

* hotfix/fix_images:
  edit readme
  edit gitgnore
  fix glyphicons js
edit image
edit color
rename grant_operators to organization
fix locales
Merge branch 'feature/add_grant_operator_type' into develop

* feature/add_grant_operator_type:
  fix locales
  rename grant_operators to organization
update gems
add mini to glyphicons
add logo to orgs
edit glyphicons
Merge branch 'feature/add_logo_to_orgs' into develop

* feature/add_logo_to_orgs:
  edit glyphicons
  add logo to orgs
  add mini to glyphicons
  update gems
hide popover on contest_requests forms
add contest_url to contest_request
comb organizations index
custom file field input
fix avatar logo
add subject to contest
add default to contest subject
add second tabs to contests index for sujects
fix contests index