fix #6
add flatpages for about, contact, and terms pages.
add flatpages init data for loaddata
add links in footer
Merge pull request #10 from xHFT/flatpages

Flatpages
Merge pull request #9 from xHFT/issues/6

fix #6
Merge branches 'auto-create-invitee' and 'dev' of github.com:xHFT/pencilme-dev into auto-create-invitee