removing unused div.
improved app detail html.

related to #34.
using include for app/navbar.

related to #34.
improved app team page.

related to #34.
improved html markup for app add team.

related to #34.
added small logo for internal pages.

related to #34.
improved markup for app log.

related to #34.
added link for settings.

related to #34.
improved markup for create app.

related to #34.