single search box similar to ask
removed MLT and added tag to search description
add MLT back to event model
added is_admin flag to leaner search
changed to single search for all users
show learners heading in index, but ask for login to view learner names and profiles
Layout tweaks
merged two learners views into one
Merge branch 'single_search_box' of github.com:extension/learn into single_search_box
Merge branch 'add_search_update_flag' into single_search_box

Conflicts:
	app/models/learner.rb
Merge branch 'add_search_update_flag' into single_search_box
Merge branch 'master' into single_search_box
Merge branch 'single_search_box' of github.com:extension/learn into single_search_box
Merge branch 'single_search_box' of github.com:extension/learn into single_search_box
Merge branch 'single_search_box' of github.com:extension/learn into single_search_box
Merge branch 'single_search_box' of github.com:extension/learn into single_search_box
Fix titles and layouts
removed is_admin flag
add tag search to learn data
added help text to tag label