Update settings.php

Added block translation "General Settings"
Update theme_essential.php

Added 'General Settings'
remove testing text string
Fix issues with standard layout
fixes to formatting of new admin icon items
Fixes to allow drag and drop in edit mode
Fixing layout of tabs
New 2 column layout for reports and admin screens
New Report layout
Merge pull request #20 from felixod/MOODLE_25

Adding missing lang string
Merge branch 'MOODLE_25'