Merge pull request #202 from beat/feature-appstore-client

Fixing URL for CDN access
Merge pull request #203 from beat/feature-appstore-client

Feature appstore client: Going live with Joomla CDN (non-ssl for alpha 1 is ok) !
Hathor adapted to new look
Merge pull request #216 from emavro/feature-appstore-client

Hathor adapted to new look
Add spinning wheel during installation from web or url