Updated slc dashboard configs

Modified student-finance to reflect need to present 2013/14 and 2014/15 applications as separate modules
Created associated page modules
Added clarification text based on revised filtering for:
- student finance applications from england resident applicants
- new (not continuing) applications only
- HE full-time only

NOTE: GA and Pingdom sourced data - site-traffic, device-usage, users-at-each-stage based on ALL traffic to the webapp - not filtered on slc-england data

Rebased to incorparate changes by Anna re. inclusion of Department and layout changes
Merge pull request #291 from alphagov/updated-slc-dashboard-configs

Updated slc dashboard configs