Merge pull request #123 from coolbung/feature-appstore-server

Extension details view is now partial dynamic data partial hardcoded. TODO
Breadcrumbs and extensive code cleaning
Merge pull request #130 from emavro/feature-appstore-server

Breadcrumbs and extensive code cleaning
Added limits for pagination
Merge branch 'feature-appstore-server' of github.com:joomla-projects/joomla-cms into feature-appstore-server
URL helper and bits of pagination