Fix 2 bugs in the status section for template files
Don't show warnings on the setup & about pages
Move version checking to the installer core add-on
A first shop at the about screen
Minor improvements to the about page
Fix some errors
A better setup page + all ajax stuff
Extract some plugin specific code from this framework class (some code still left in there)
Better dashboard page
Add blog tab in dashboard
Add addons tab
Remove unused code
Add newsletter form in the dashboard footer
Newsletter form improved & inserted in the setup screen too
Update newsletter address in sidebox
Remove unused code
Remove the changelog tab for now
Merge branch 'feature/Installer' into develop