small enhancements to the gui
Search result (artist, album) in jQuery listviews.

Put search result for artists and albums inside jQuery Mobile listviews.
These listviews are limited to a hardcoded number of items to display at
first, with the option of expanding the list with the rest.
List tracks in jQuery table widget.

Currently, the tracks are just listed in the table and no action can be
taken on them. Eventually, the same popup menu as before or something
equivalent should be added.
Add track popup menu in search results view.
Fix formatting of artists and track length.
Merge pull request #12 from joelpet/improve-search-view

Improve search view
Merge branch 'pr/11' into develop
Merge branch 'develop'

Conflicts:
	webclient/js/library.js
library/search works again
Some style changes
Merge branch 'master' of https://github.com/RandomByte/Mopidy-Webclient

Conflicts:
	webclient/css/webclient.css