connected v0.9.9

Several QoL changes:

• replaced some button texts with graphics
• removed link in About window
• increased height of Save/Load and Welcome windows
• added Cut to Edit menu
• moved Delete, Duplicate and Mirror from Selection menu to Edit menu
• fixed stray connection line when pressing Escape during node creation from port
• added option to sort files by last write time in Save/Load window
• changed cursor behaviour at window edges - the cursor now switches to the other side of the window when panning
• improved rectangle selection
• added possibility to (de)select an Organize node without its children by pressing the Ctrl key