Added mouseover text for controls. (Fixes #76)
Added mouseover text for controls. (Fixes #76)

woutervanwijk/Mopidy-MusicBox-Webclient,wagamama/Mopidy-MusicBox-Webclient,pimusicbox/mopidy-musicbox-webclient,pimusicbox/mopidy-musicbox-webclient,HeadspringLabs/Mopidy-Headspring-Web,wagamama/Mopidy-MusicBox-Webclient,woutervanwijk/Mopidy-MusicBox-Webclient,HeadspringLabs/Mopidy-Headspring-Web,pimusicbox/mopidy-musicbox-webclient,HeadspringLabs/Mopidy-Headspring-Web,woutervanwijk/Mopidy-MusicBox-Webclient,wagamama/Mopidy-MusicBox-Webclient