Implement the mode selection dropdown menu
Try on UI modification - overlaying buttons
Invisible buttons are applicable
Removable Buttons
Add check boxes UI for calendar mode
deleted generated files
add libs
merge andrew and UI
merged with nahush
Merge branch 'andrew' into UI
Add device selection for Navigation Mode
Merge branch 'master' into UI
Add UI for Visitor Mode to switch among prototypes
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added flexibility to view pagers
made camera view invisible for visitor and apprentice modes
UI integration
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