eliminate refs to nonexistent toolbar files
Start adjusting config UI

Start move to single column layout for advanced parameters; Fix
crashing bug in PrimaryFlightDisplay when uas is removed and then
re-added; workaround compiler warning in GeneralBlockPanelKernel,
wip new advanced configuration layout
Fixes for displaying RC Ch5-Ch8
improve visiblity of RC channel indicators
Gradients for RC indicators
Fix waiting label display
wip new RC layout
Fixing rc calibration and realtime display
Merge branch 'config_fixes' of https://github.com/tstellanova/qgroundcontrol into config
Revert "eliminate refs to nonexistent toolbar files"

This reverts commit 09452414f7115e47e2a21d9e5911a8b472a7343c.
Fixed APM toolbar assumptions about link count