Added quickstart, changed setup.py, changed manifest

Added doc to manifest. It would causes errors if it's not there on sdist
creation.
Added quickstart.rst: Is the configuration part of CM.
Changed long description in setup.py pointing to quickstart.rst
Update MANIFEST.in
Update setup.py
Update quickstart.rst
improved search term sanitation for album art fetcher #427
Merge remote-tracking branch 'upstream/devel' into devel
Revert "Added quickstart, changed setup.py, changed manifest"

This reverts commit 76a2cab40f84d75c02a8faf85c0635749a10c97b.

Conflicts:
	quickstart.rst
	setup.py
Merge pull request #420 from Lord-Simon/devel

Added quickstart, changed setup.py, changed manifest, changed default image engine to google
sorting user list by last time online
Merge branch 'devel' of github.com:devsnd/cherrymusic into devel
show default images when online image fetching is deactivated, fixes #417
implemented automatic scrolling of playlist when adding new track or next track is being played, closes #409
always showing currently playing track in title and progress bar, even though playlist is empty, closes #433
fixing albumartfetcher not working with amazon anymore
fixed google image search for albumartfetcher
show parent folder was hidden, fixed #435
fixed "show parent folder" not working for files in the basedir
fixed tab title showing "undefined" when no track is playing
automatically scrolling to top when loading a directory, to show progress, closes #426
Merge branch 'devel' into tinytag