Bump version to 0.5.0
Add checkboxes, to chose user roles
Add option to allow/deny user roles to use Whereabouts

- Update screenshot 1
- Add plugin setting for allowed user roles
- Add styling for user role checkboxes
Merge branch 'allow-deny-user-roles' into 0.5.0-development
Add shortcode to display the widget anywhere, update readme
Add banner, new icon, update readme
Complete translation
Fix undefined index notice
Remove update function -> not working

- Remove function to be called on upgrader_process_complete - was not working
- Update readme