bugfix: enabling gender selection for offers - hidden field value was never set
adding default value to genders in databse layer
refactoring

- fixing broken auth redirect from last refactoring in item show filter
- drying gender selects
- removing gender select default from view - it's in the db
- fitting some i18n keys into name convention
Added alt-text for footer logos.
refactoring

- cleaning i18n
- removing translate call default args
- removing locked items index for admins
- drying sort button
- inlining item controller show filter, renaming other setting filter
Merge branch 'master' into combi-form

Conflicts:
	app/controllers/offers_controller.rb
	app/views/offers/_form.html.erb
	app/views/requests/_form.html.erb