Allow to define different Ability classes for Cancan (e.g. backend and frontend)

For more information see: https://github.com/ryanb/cancan/wiki/Admin-Namespace
Merge pull request #841 from jbescoyez/allow_to_use_custom_cancan_abilities

Allow to define different Ability classes for Cancan (e.g. backend and frontend)
WIP: Nested forms
Convert README to ASCII English text
defensive hot-fix for #849, nil entries in histories
defensive hot-fix for #849, nil entries in histories
Merge branch 'master' of github.com:sferik/rails_admin
milestone. Tests pass. [ci skip]
Don't wrap text in anchors [ci skip]
milestone: JS fact. [ci skip]
Appending newline to Gemfile before writing gem devise
Merge pull request #856 from johnmdonahue/gemfile-devise-leading-newline

Appending newline to Gemfile before writing gem devise [ci skip]
wip : milestone [ci skip]
added ability to filter in mmddyyyy format for :datetime, :timestamp, and :date fields
Fixed bug for all models singul.
Merge pull request #857 from jorgeramos/allow-filtering-date-by-mmddyyyy

added ability to filter in mmddyyyy format for :datetime, :timestamp, and :date fields
added condition so that mmddyyyy value remained after refresh
Merge pull request #861 from jorgeramos/allow-filtering-date-by-mmddyyyy

added condition so that mmddyyyy value remained after refresh [ci skip]
Fixed bug for all models singul.
Merge branch 'master' of github.com:jetthoughts/rails_admin