Force scrollbar to appear

* Prevents the UI from 'jumping' sideways when switching between a view that fits in the window and a view that overflows
Seek, repeat, and shuffle control for Spop

command/index.php
* Add cases to handle seek, repeat, and shuffle commands
* Guarantee sockets disconnect by end of script

db/index.php
* Guarantee sockets disconnect by end of script

inc/player_lib.php
* Deal with Spop status data for seek, repeat, shuffle, playlist position

js/volumio.api.js
* Connect timer control with whichever daemon is active
* Remove refreshState function, use the dynamically defined 'objectInputState' instead of 'MpdState'

js/volumio.playback.js
* Add Spop seek command support
Merge remote-tracking branch 'upstream/master'
Merge pull request #47 from ning-yu/master

Spotify and CSS changes