fix layout

[mcevoyandy]

1. Make the GUI layout smaller / more compact
2. Fix how decimals are shown
3. Address has manu and imarker menu. Do we need / want both?

[mcevoyandy]

@davetcoleman, I've made the GUI much smaller so think this addresses the issues you had with it's size. Let me know what you think. Do you still think all TFs should have an imarker? Let me know if you see any other display related stuff that should be fixed.

[davetcoleman]

let me know when i should review this again, you said you had some new changes coming up