Fixes #813
Fixes #812
Fixes #811
Fixes #810
minor typo
Fixes #801
Fixes #800
Fixes #799
Fixes #798
integrate the manipulate sensor data cheat sheet, so it doesn't fall through the cracks.
Hide the lower level cheat sheets
fixes #777
Merge pull request #816 from debrief/feature/cheat_sheet_updates

SATC Cheat Sheet fixes
fixes #820
we don't need this fix, the findNearestInPeriod fix removes the requirement for this.
Merge pull request #822 from debrief/feature/820_no_white_marker

we don't need this fix, the findNearestInPeriod fix removes the requirem...
introduce test case
mark the correct bearings as active
minor fix to resolve NPE