Some stuff
moved student info printing/changing into functions
Added Ctrl-C handling back in to places.
Fixed the Ctrl-C handling that was just added back in.
Reorganized location of signal handler.
Add in progress vs unfinished grading and handling for end of session race condition.
Another grading dawdle-condition fix.
Merge branch 'dev-adam' of github.com:ludvi025/csci1133 into dev-tom
Merge branch 'dev-mina' of github.com:ludvi025/csci1133 into dev-tom

Conflicts:
	grade_homework.py
String literal to correct art.
Added get_input to lib/__init__
Adding menu'd navigation.
Adding menu flow to the docs.
Changed _enum to options.
menu_common added
Mergin dev-tom into dev-adam