added accounts-password package. Started user auth
added login buttons
added Program subscription logic

the client re-subscribes to 'Programs' every time an old Program ended.
Potentially wasteful on traffic, but spares the server of any complex
publishing logic.
Merge branch 'master' of github.com:markuswi/fernsehnauten3
merged markus' tree
selector fix2
Merge branch 'master' of github.com:Ed-von-Schleck/fernsehnauten3

Conflicts:
	client/fernsehnauten3.styl