fixed search bug, added Teaser text field

Fixed bug with small search
Fixed bug with blog teasers - added new teaser db field
Added ability to change max comment size
added 404 error handler
Added new rows to 2 databases, requires alter table statements in order
to upgrade existing tables!
Added HackerThemes tales theme

HackerThemes has agreed to include one of his awesome styles into
blogsrap.py for FREE.
updated README.md

updated default style
updated README.md theme.
Merge branch 'master' into releases