Update readme with link to screenshots.
Update .gitignore to ingnore PO files andsftp-config.json.
Update to better support Connections >= 0.8.

The plugin now hooks into the cn_loaded action rather than
plugins_loaded. This is to prevent fatal PHP errors.

Removed the action which would deactivate Toolbar if Connections was
not activate.

Fix the manage page filters.
Merge branch 'develop'