#89 Handle not capable enough devices:
- added the modal to explain why the device can't work with MixTube
- disabled play button when playback is not possible
- (extra) remove non working selective script loading
#89 Handle not capable enough devices:
- added mtButton directive
- deactivated queue item button when controls should not be displayed
- fixed some styles (border radius)
#98 The video scene is not positioned properly in landscape mode
- moved the scene thanks to a negative top position (== header height)
Added a "magic" viewport meta value that could trigger rasterization in Chrome 37 for some devices