#70 Group sync improvements

[careca]

Hi, i would like to sugest: 1 - A button of some sort to substitute the need to start group sync from cmd line,
because, for some people that's just too complex and scary for them to do.

2 - A context menu item "Add to group = XXXX" When you already have created a group being XXXX the name of that group, or several, this way you wouldn't need to open the configuration window, and also, when you grouped an item, it would get a small icon to let you know it is grouped, or even a frame around the ones that are grouped.

What do you think?

Greetings,
André Modesto