setup parameter passing to google hangout

The 'gd' paramter can now be passed to a Google+ API Hangout & read within
a custom Hangout App
html to load the hangout
setup JavaScript to be local

JavaScript now managed within web2py. Also, controller method setup for
group_chat.html
Deleting the file chat.xml since we are now referring to the one in the google project
Merge remote-tracking branch 'upstream/master'
AJAX JSON setup

Setting up a AJAX JSON call that will be invoked from our Google Hangout
app going back to our web2py server. Web2py will then send a JSON reponse
back to our Google Hangout app.
moved inline CSS to static file
Merge remote-tracking branch 'upstream/master'
Adding start-hangout.png. The user would click it to start a hangout.
Adding chat.css to store styling for the Chat group
Now displaying information in a table format.
Displays the courses the logged in student is enrolled in.
Inserted the start-hangout.png. The user would click it to start a hangout.
Setting google_hangouts() to retrieve the courses the student is enrolled in.
And inserts the chat.css file.
Deleted the chat_i_frame() because it is not being used.
Merge remote-tracking branch 'origin/master'

Conflicts:
	controllers/groupchat.py
Merge branch 'master' of https://github.com/jjunk/lms299

Conflicts:
	controllers/groupchat.py
sending back Hangouts URL

When the Google Hangout app loads, the URL is now sent back to the web2py
instance with an AJAX call.
HTML & JS cleanup

Removed testing JS methods and HTML sample code that was not being used.
namespacing group chat JS

JavaScript code now have of "lms299.groupchat". jQuery's onRead() function
is now leveraged to add the our JS to Google Hangout's onClientReady()
callback. Before, Google's client.js library was being used.
Fixing spelling error in javascript

Fixed a spelling error for the url inside the JSON to the controller
Changed function to insert hangout session data

Changed hangouts_url_for_session to get data out of JSON and call
init_session
Changed group_chat_session table

Modified columns in group_chat_session table to remove not needed
columns and added url column. Modified init_group_chat_session to
account for changed columns.