Delete unnecessary clearfix from outer container
Increase default height of controlbar
Add wrapper for control lists for flex box usage

Place toggle buttons and timecontrols inside the wrapper
Apply flexbox model to controls

- Widescreen: time controls and toggle items appear in a row together
- Mobile: time controls and toggle items are placed in two seperate rows
Merge pull request #207 from podlove/controls-in-a-row

Rework controls