New Pull for Auto-Merge. Replaces pull #593

Commits:
[FIX] Survey (Grid) Beta 1.3.7.5 and Stable 1.3.8
0c2b276ebf71bea6b9f494d52f4d9721143ca4c6 #592 

Survey (Grid) Line Distance ToolTip + House Cleaning
f4a559e90cc9bece79deab74d7ece4444d2a2c1d #587 

FlightPlanner -- Load polygon from shape file.
02780fd87c51f2a62281f8cc2834a79e0662adec #594