By default, bookmarks stored should be private

Model tests added for BmarkMgr store

Changed comment
Update dependencies.

- Remove psycopg from the base install as it defaults to sqlite.
- Move the pyinotify to the dev-requirements so that OSX base install can
work.
Merge pull request #469 from mitechie/develop

- Remove psycopg from the base install as it defaults to sqlite.
- Move the pyinotify to the dev-requirements so that OSX base install can
work.
Merge pull request #468 from sammyshj/modelsupdates

By default, the store function of BmarkMgr should be storing private bookmarks unless specified otherwise.