added login functionality
`
tried merging

Merge branch 'master' of https://github.com/cramja/stocktracker

Conflicts:
	stocktracker/__pycache__/urls.cpython-33.pyc
	stocktracker/__pycache__/views.cpython-33.pyc
	stocktracker/urls.py
	stocktracker/views.py
Merge branch 'master' of https://github.com/cramja/stocktracker