Merge branch 'release/v0.8.2' into develop
added 'admin' field to users
add :id attribute to 'PortfolioItemSerializer'
Added callback to destroy portfolio items
added 'user_is_admin' key to AlexApp to indicate that the authenticated user is an admin
rewrote Backbone.sync to correctly send authentication params in DELETE requests
Added buttons for 'Edit' and 'Delete' on 'PortfolioItem's that are only visible to logged in admin users; 'Add new item' button is now only visible to admin users; changed 'Add new item' link to button
Added 'destroy' action to 'PortfolioItemsController'
'Edit' button for 'PortfolioItem's no longer has class 'js-delete' but 'js-edit'
changed 'admin' priviledges so that only admins may edit the portfolio
Added 'update' action to 'PortfolioItemsController'
Added triggers for editing portfolio items, and modified 'submitForm' to be generic (work for both 'new' and 'edit' events)
Added 'Portfolio.Common' module with 'PortfolioItemForm' view and 'portfolio_item_form_template'
Added 'Edit.PortfolioItem' view for editing portfolio items based on the 'Common.PortfolioItemForm'
modified 'Portfolio.New.PortfolioItem' view to use 'Portfolio.Common.PortfolioItemForm' view
Added 'dateFormat' option to 'datepicker'
Removed extra parenthesis in 'PortfolioItemsController' in 'index' action on 'render' call
Added 'project_start_date' to serialized attributes in 'PortfolioItemSerializer'
Set 'maxDate' option on 'datepicker' to todays date
'datepicker' shows todays date when creating new portfolio items'