Merge pull request #2 from sssonline/master

Moqui Contributions
No changes, code formatting only
If link.@style is specified apply to form submit button too, was only on link/buttons
Removed unused import
Changed example app to mount through DB instead of XML element, more easily removed or restricted; added AppList screen as the default screen showing apps available (screens under the apps screen)
Added current screen name and more complete bread crumbs to navbar
Fix for last commit, moved some assigns so they are available where referred to
Fixed issues with complex-alias where aliased entities were not add
  to list of aliased entities used and alias level function was not added
Improved float-box styles, other cleanups
Added Moqui logo in header, fill in username on error when entered
A bunch of style cleanups and improvements, including support for bg-dark as an outer style, and a button in the navbar to switch between bg-light (default) and bg-dark, and remembers as user preference OUTER_STYLE
Added different background for bg-light
Cleaned up default.css, removed a bunch of old commented styles now that we're using Bootstrap and Metis defaults, other misc cleanups
Merged from upstream moqui/moqui