Groups improvements (auto expend when selected)

[ttrafford7]

Groups should auto expend when you go up with an arrow key.
Additionally, maybe some way to expend them with a key would be nice, cause now it's impossible to do so, you have to use mouse to press that small arrow on the right.

[ttrafford7]

Moreover, for some reason groups show "folders" group before the "files", i don't know how to change it, if it's possible at all. Files are searched more frequently than folders.

[ttrafford7]