Ratsnest was not refreshed on board reload - fixed.
Better way of adding CONTEXT_MENU entries.
Ratsnest lines are highlighted together with all items in the same net.
Added preference for selecting tracks/vias/graphics if there is a module present in the selection point.
Resolved HOME hot key conflict between menu entry (Zoom Page) and event assigned to the hot key in the ACTION_MANAGER.
Conflicts:
	pcbnew/menubar_pcbframe.cpp
Fixed jumpy zoom when hotkeys and scroll wheel were used alternatively.
Added WX_UNIT_TEXT - wxWidget control for inputing sizes using different units (mm, inch, internal units).
More compatibility fixes.
SELECTION_TOOL updates dragging offset after rotating/flipping.
Cursor position is saved as a field in order to avoid drifting of items while they are being dragged and rotated/flipped.
Pad properties are back.
Fixed rotation/flip point.
Fixing memory leaks.
Recursive copy constructor for CONTEXT_MENU.
Fixed custom event handlers for CONTEXT_MENU.
Moved menuCopy to CONTEXT_MENU copy constructor.
WX_UNIT_TEXT can handle default value.
Minor reorganization of handling custom events with CONTEXT_MENU.
Initial support for custom track width & via size.
Custom track/via size settings nicely cooperate with other options.
Custom width settings taken into account in wxUpdateUIEvent handlers.
Moved most of the board design rules related fields & methods to BOARD_DESIGN_SETTINGS class.