connected v1.0.7

I finally had some time to do small things for Connected again. The main reason is, of course, that I stumbled upon some bug while using it myself for our current game project. Here's the changelog for v1.0.7:

• fixed loading dialogs when custom suffix is set to a string with dot
• added "Quicksave" to File menu
• changed the hotkey Ctrl+S to instantly saving the current file
• changed the hotkey for opening the save dialog to Ctrl+Shift+S
• added Zoom Precision to settings
• added "zoom_precision" to config file: 0 (default) or 1