RE 6901 MantidEV usability

Changed |Q| range to go up to 35.
Set MinRecursionDepth to 7 on ConvertToMD, to give
at least 128x128x128 boxes.  This makes the slice
viewer a bit more usable.

Refs #6901
RE 6901 MantidEV usability

Added units (A^-1) to appropriate labels on the
Integrate tab.

refs #6901
RE 6901 MantidEV usability improvements

Added menu option to reset default state of all GUI components.
Removed some debug prints.

refs #6901
Merge branch 'feature/6901_MantidEV_usability' into develop