defined importable classes for argument parsing
added command to serve databases via SRU

Adds requirement for tornado.
Will soon add the other apps (search, data resolver) so that a demo/dev
server can be started simultaneously with a single command
added redirect from old /services/ SRU mount point
updated SRU mount points in ZeeRex records
additional styling for web applications
added search and data SRU applications to `serve` command
added capability to save and retrieve ResultSets
added capability to sort results by criteria (e.g. title)
catch invalid resultSet identifier
WSGI handlers get ResultSetStore at init time
added store_resultSet method to WSGI base class
added method for generating query from form
fixed bugs in sort by title
load all templates as UTF-8
added method for generating ResultSet from form
added summary/brief display
removed AddThis sharing options from utility bar
disabled ajax handled links
handle WSGI application config, including defaults
improved hit navigation