Improve ssh key generation
Added a branch<->ticketnum dictionary
A few more changes related to branch<->ticketnum
Miscellaneous fixes
Merge branch 'master' of github.com:sagemath/sage-workflow

Conflicts:
	sagedev/sagedev.py
Adding in changes from Timo's version
Merge branch 'master' of github.com:sagemath/sage-workflow

Conflicts:
	sagedev/git_interface.py
	sagedev/sagedev.py