If tool was previously active and it is called again, it is brought to the top of the active tool stack.
It fixes issue of dragging of items that have EDIT_POINTs, when dragging was activated by hovering over an item and using hot key.

Pcbnew: bug fix: sometimes (depending on a previous command) pcbnew could  create an usual zone instead of a keepout zone when the" create keepout zone" tool is activated

Very minor other fix

Eeschema: fix Bug #1298868 (Can't create new schematic from main toolbar icon) - Fix a bug I created in rev 4773

Fix a mismatch between method signature in scripting/python_scripting.cpp and scripting/python_scripting.h

Dialog Freeroute: if freeroute.jar is find in kicad binaries, it is run as a standard java application, not as web applcation
Very minor other fixes
FPC_(SMD_type)_footprintwizard.py wizard finished.

- resetting relative coordinates
- switching units
- not official: changing transparency for layers (works only for main layers, does not work on vias/pads/etc.)

Refactored code that handled zooming events.
Added PCB_RENDER_SETTINGS::Get/SetSketchMode().
PCBNEW_CONTROL reacts to hot keys changing display modes (sketch via/tracks, high contrast).

Added PCBNEW_CONTROLS for handling miscellaneous hot keys (trying to be compatible with the default hot key settings). Currently there are a lot of stubs to be filled out (in pcbnew_controls.cpp).
Handled actions:
- switching layers
- switching grids
- changing track width & via size

Eeschema: does not close when the schematic file given in command line to run Eeschema is not found (i.e. when starting a new project). Otherwise one cannot start a new schematic project.

Minor fixes for Windows: move resources from dso to .exe, to have the application icon in executable, and therefore shown in shortcuts.
pcb_calculator: minor coding style fix.

Refactored:
- EDA_DRAW_FRAME::SetNextGrid() & SetPrevGrid()
- PCB_BASE_FRAME::SetFastGrid1() & SetFastGrid2()
Removed a warning from RN_DATA::updateNet(int).

CvPcb: Fix crashes when starting cvPcb (could be Windows Specific) and after closing the footprint viewer.

ROUTER_TOOL events have temporarily changed their hotkeys assignment.

* Use wxFileName::GetPathSeparator() instead of redefining them.