- added a welcome/help screen

- added a help button

- trying pausing previous tick/tock before starting new one - see if this helps Android
- major update!
- raionalised control panel
- made intro/info screen
- made Activities and Content same size as other screens - changed border widths to ems so that they scale properly
- mostly got content selection buttons working properly (exception is Dot and Ben buttons - but haven't been able to find problem yet)
- changed activity buttons to green
- divided vocab into General, Specific and Dot and Ben sections (need to make Specific topics)
- etc etc etc