Issue 5436: Admin custom logo feature
ISSUE 5439: Fixed default button in timeout dialog
addes stripslashes to social sublinks.php
2.2 theme refinements
2.2 theme refinements
update simple theme for 2.2
update theme screenshots
adjust location of admin switch in default20 theme
remove old gif screenshot from default theme
Merge pull request #87 from mancoolgunda/admin_custom_logo

Issue 5436: Admin custom logo feature, added language to db
Merge pull request #88 from ayushgupta2209/sessionbox

ISSUE 5439: Fixed default button in timeout dialog
Theme updates for IE8 for ATutor 2.2, first pass
Issue 5436: Admin Custom logo feature - update
Issue 5436: Admin custom logo - added missing fields check
Merge pull request #90 from mancoolgunda/custom_logo_update

Issue 5436: Admin custom logo feature - Update
Indentation fix
ISSUE 5438: Content Navigation improvement
Issue 5436: Admin custom logo feature - Update
Merge pull request #91 from ayushgupta2209/content

Issue 5438: Content Navigation spacing and indentation
Merge pull request #92 from mancoolgunda/admin_custom_logo_update

Issue 5436: Admin custom logo feature - Update