Updated search to use open library
Merge branch 'develop' of https://github.com/byu-osl/bookout into develop

Changed search to use open library instead of google books
Removed CSS .row offset

I'm not sure why bootstrap has a -20 offset (-30 in responsive) within
.row. I commented it out so our pages align properly. If it ends up
being important, we can reinstate the code and adjust the alignment
another way (bootswatch uses a div inside the row div to re-offset it).
small fix to user registration
Fixed logout for maintemplate.html

You can now logout with the options (gear) button in the header.
Various front end stuff
Put back aboutbookout.html
Searching!
More front-end search stuff
Header and Search changes

Header: Updated settings button to match app's design (pulled in
font-awesome to do it)
Search page: Removed explanation since a search is initiated on other
pages. Pretty'd it up a bit.
Removed Show Unavailable Books Link

We decided on using the checkbox in the side bar.
Add urls to connect users together

Added the urls and the model methods to connect one user to another
Adding books to your library
small fix on search page
Update signin.html

Added a link to register page when joining BookOut
Update managelibrary.html

Adding tables to manage library page
Add invite functionality

Made it so that when add_connection is called on a UserAccount it only
adds the connection to connected_accounts if it has received an invite
from the other user.  Otherwise, it sends an invite to the other user.
Created Network Page

Added dummy content to the table of the user's connections.
Bug Fix
updated code to use open library instead of google books