Fix css image urls to use the image-url helper

Otherwise the images won't be found in production.
Review and test redirects after login

Found out that it was redirecting back to /users/confirmation, but it shouldn't.
Added it to the list of ignored paths and added tests for all the paths
that are ignored.
Add example configuration files for shibboleth

Files used for the federation CAFe, used as a base for our shib integration
guide.
Remove invalid call to 'pp' in ApplicationController
Fixing travis
Setting up a database before travis does tests
Small change in apache's config file for apache 2.4

As recommended by passenger.
Merge branch 'master' into branch-v2-feature1062
Remove notification from pending approval page, the page has the msg

refs #1062
Show pending approval page for login via shibboleth too

refs #1062