created invitation model and mailers; added actions to create and send invitation; can accept invitation; can view all open invitations
moved mail text to locales
basic form working and sending emails
added ability to remove collaborators
added invitation users to list of collaborators
cleaned up ajax process
moved text in locale files
added query to search for new collaborators
adding ajax autocomplete
removed old code
fixed showing nickname check results
moved collaborators to own page in stories; finished collab page with messages
added collab to story context menu; re-arranged story context menu
added basic table for invitations list; updated colab search to look in new email field that does not have domain
fixed some form styles
title of story shows up in reviewer popup
removing unneeded css
add missing keys to ka locale; changed about to menu