adding stream partial
added required assets for jquery tokrn input

modified:   Gemfile
modified:   app/assets/javascripts/application.js
modified:   app/assets/stylesheets/application.css.scss
added username at the top of the idea UI.
added json controller client and server
added route to json page
added custom css to the tag autocomplete
added tag autocomplete view 'cheers'
added bootstrap style

added css imported from bootstrap css attributes and used similar colors
Merge branch 'master' into C4_Hesham_36_IdeaStream
#88, infinite scrolling
#88, added documentation
Issue #39, Modify idea model
Issue #39, Modify ideas_controller

to get username
added hints and guides to the submission form
Issue #39, Add username in show view
Merge branch 'master' into my branch

includes notifications
.
Issue#89 Add create and update User Rating methods to UserRatingsConroller
Issue#89 Add helper methods in UserRatingsHelper module
Merge branch 'C3_MahmoudHashish_#44_Delete_Idea' into C3_MahmoudHashish_#89_rating