added profile view(dialog)
Merge branch 'multicolumn' into profile-view
added the triggers to show profile dialog
    1. message's avator
    2. message's user name on header
    3. @username on message
fixed a problem that some dialogs(response, remove) are shown behind
profile dialog.
fixed the problem that a profile dialog don't call callback when
initialization was failed.
added the limitation to show one profile dialog only at the same time.
However, the limitation is uncomplete.  You can some profile dialogs
at the same time using AtmosDialog directly.
added the function to apply screen when message was responded and
removed.
removed the codes not needed.
changed cursor to pointer when a cursor is on avator or username.
changed the method to access property from direct to call method.
added the trigger to show profile dialog on private message's address
user names.
fixed the problem could not show profile dialog when clicking user name
on conversation view.
Merge pull request #28 from haushinka2dx/profile-view

Profile View