Fixes #6: Implemented send to top/bottom as context menu.
setup: trac-backlog is hosted on github now
Merge batkinson's send to top/bottom context menu.
manifest: add missing wildcard
Add an "Open in new window" item into the context menu.
prefs: clean up some trailing white space
changelog: update the list of fixes
setup: reformat so that the indentation is correct
setup: add trove classifiers
setup: Simplified BSD => BSD
readme: rename and add some content
setup: pull the long description from the readme
prep for 0.3.0
open for development
Use single quotes in strings for compatibility with postgresql.
Fix some long lines.
Update copyright strings.
Avoid the use of == since some SQL engines don't cope with it well.

A single equals is more correct anyways.
web_ui: remove unused imports and a commented out statement
web_ui: tolerate deleted tickets better

Implement a better algorithm for detecting when tickets don't have
ranks.  Also, don't use the ticket_id as the rank as it may already be
in use via rearranging the backlog.  Instead, choose MAX(rank)+1 as the
new rank.  Make the same change in ticket_created(), since it can suffer
from the same problem.