Add menu toggle for displaying section times

[tkem]

The current implementation using ion-slides to switch between RMS views with/without section times (i.e. check lanes) has some drawbacks:

• some users do not recognize that functionality without assistance
• since both views are updated simultaneously, there might be a performance issue
• the slides indicator (dots) is hard to position correctly with varying height and display size

Therefore, a context menu entry should be added to show the section times in the RMS screen. The ion-slides element should be removed.