GuidePoint: Display marker with altitude
GuidePoint: Update marker on altitude change, dismiss marker on APM mode change, fix for loss of marker on orientation change
GuidePoint: added distance from operator
GuidePoint: draggable guide point, click marker to change altitude
DistanceView: textAppearanceMedium -> textAppearanceSmall
Parameters: Load/display description, unit metadata from excellent APM MissionPlanner ParameterMetaData.xml if present in 'Parameters' directory (TODO: ranges, values)
Parameters: Metadata - select metadata vehicle type from Settings -> Advanced -> Parameter Metadata [ None (default), ArduCopter, ArduPlane, ArduRover ]
Parameters: Use connected vehicle type to auto-select parameter metadata type if connected, use configured value if offline.
Parameters: Extracted parser code from Parameters -> ParameterMetadataMapReader, renamed .loadMetaData(...) -> .loadMetadata(…), renamed .getMetaData(…) -> .getMetadata(…)
Parameters: Use ParameterMetadata.xml if present in Parameters directory, else use built-in ParameterMetadata.xml in resources (assets) by default
Merge pull request #344 from bob01/master_parameter_metadata

Parameters: Use APM parameter metadata if available when editing parameters
Parameters: Help display w/ description, units, valid range & accepted values where available
Parameters: Changed range separator to '/' for clarity when dealing w/ negative numbers
Merge pull request #345 from bob01/master_parameter_help

Parameters: Help display w/ description, units, valid range & accepted values where available
Merge branch 'master' into guided

Conflicts:
	DroidPlanner/res/layout/activity_planning.xml
Merge pull request #347 from arthurbenemann/guided

Draggable guide-point
Planning: misc - renamed [ ^ Home ] -> [ ^ WP ] - distance is inter-waypoint distance, not distance to home
Planning: misc - adjusted distance column width to match header, right align Altitude and ^ WP w/ padding
Merge pull request #348 from bob01/master_misc

Planning: minor - renamed column header [ ^ Home ] -> [ ^ WP ]