Add an rm file command to shell
refactor simple shell to make it easier to add new commands
Merge pull request #265 from wolfmanjm/feature/delete-file

Add an rm file command to shell
split out net command and testcommand
Merge remote-tracking branch 'upstream/edge' into network

Conflicts:
	src/modules/utils/simpleshell/SimpleShell.cpp
	src/modules/utils/simpleshell/SimpleShell.h