Replace old blue logo with new sap yellow logo

Apply the new yellow logo.
change logo name

change logo name from sap_ logo.png to sap_logo.png
Change logo to smaller size

change logo size from 600px to 200px
Add SAP new logo to README

Replace read me old blue logo to yellow one
Add 'we reviewninja our code' badge
Merge pull request #437 from reviewninja/feature/we-reviewninja-badge

Add 'we reviewninja our code' badge
Fix missing user error

When a user first logs in with a fresh mongo db the user can be missing
when this happens log out and redirect back to the login page
Use ng-cloak to fix fouc problem
Fix sass lint error
Merge pull request #439 from reviewninja/feature/fix-fouc

Use ng-cloak to fix FOUC
Merge pull request #440 from reviewninja/master

Minor update