Leginon System version 31

Version 3.1 contains several minor improvement

Biggest new feature is FEI Falcom camera support. A couple of GUI user requests are also added, such as a way to display camera and beam dimension of the child image while targets are picked.

Detailed changes

1. pyscope Changes 3.1
2. New User Features 3.1
3. Bug Fixes 3.1
4. Known Bugs 3.1