fix: Make links in posts and comments usable
fix: Make links in posts and comments usable

URLs that users put in their posts and comments
are now standard hyperlinks.

Resolves: #16

tstillwell2k17/GAE-BLOGAPP-MULTI_USER-DEMO,tstillwell2k17/GAE-BLOGAPP-MULTI_USER-DEMO,tstillwell2k17/GAE-BLOGAPP-MULTI_USER-DEMO