Add autorefresh #154
Description
Currently, qgit doesn't monitor the content of the current repository it displays. If this changes (and, in particular, if the content of the current working directory changes), the app needs to be refreshed manually (button in toolbar or F5).
TODO: add a file system monitor on the working directory and on the content of the .git directory of the displayed repo and automatically refresh the content (with a sufficient delay -- say 5s). Make it possible to enable/disable this automatic refresh from the settings.