Improve UI

Add separators to right click menu
Make the main Gtk::Paned split more nicely
Merge pull request #46 from colatkinson/ui_improve

Improve small parts of UI
Merge pull request #47 from IGI-111/tbug

correct bug where infobar shows when no torrent is selected
fix inaccurate graph
format everything
Merge pull request #48 from IGI-111/graph

Fix for inaccurate curved graph
Fixes crashs when double clicking on an uninitialized torrent.

Also a timing issue.
When you select a torrent, the infobar could take up to 1 second before showing up.
add more descriptive comments to GtkGraph's methods
Merge pull request #49 from gtorrent/wip/fix-crash

Fixes crashs when double clicking on an uninitialized torrent.
add plural when needed
Merge pull request #50 from IGI-111/comments

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