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.

Minor fixes (check for net codes size for ratsnest, cursor coordinates are not always shown as if the cursor was snapped).

Screen size is saved in VECTOR2I instead of VECTOR2D.

!   The initial testing of this commit should be done using a Debug build so that
    all the wxASSERT()s are enabled.  Also, be sure and keep enabled the
    USE_KIWAY_DLLs option.  The tree won't likely build without it.  Turning it
    off is senseless anyways.  If you want stable code, go back to a prior version,
    the one tagged with "stable".

*   Relocate all functionality out of the wxApp derivative into more finely
    targeted purposes:
    a) DLL/DSO specific
    b) PROJECT specific
    c) EXE or process specific
    d) configuration file specific data
    e) configuration file manipulations functions.

    All of this functionality was blended into an extremely large wxApp derivative
    and that was incompatible with the desire to support multiple concurrently
    loaded DLL/DSO's ("KIFACE")s and multiple concurrently open projects.
    An amazing amount of organization come from simply sorting each bit of
    functionality into the proper box.

*   Switch to wxConfigBase from wxConfig everywhere except instantiation.
*   Add classes KIWAY, KIFACE, KIFACE_I, SEARCH_STACK, PGM_BASE, PGM_KICAD,
    PGM_SINGLE_TOP,
*   Remove "Return" prefix on many function names.
*   Remove obvious comments from CMakeLists.txt files, and from else() and endif()s.
*   Fix building boost for use in a DSO on linux.
*   Remove some of the assumptions in the CMakeLists.txt files that windows had
    to be the host platform when building windows binaries.
*   Reduce the number of wxStrings being constructed at program load time via
    static construction.
*   Pass wxConfigBase* to all SaveSettings() and LoadSettings() functions so that
    these functions are useful even when the wxConfigBase comes from another
    source, as is the case in the KICAD_MANAGER_FRAME.
*   Move the setting of the KIPRJMOD environment variable into class PROJECT,
    so that it can be moved into a project variable soon, and out of FP_LIB_TABLE.
*   Add the KIWAY_PLAYER which is associated with a particular PROJECT, and all
    its child wxFrames and wxDialogs now have a Kiway() member function which
    returns a KIWAY& that that window tree branch is in support of.  This is like
    wxWindows DNA in that child windows get this member with proper value at time
    of construction.
*   Anticipate some of the needs for milestones B) and C) and make code
    adjustments now in an effort to reduce work in those milestones.
*   No testing has been done for python scripting, since milestone C) has that
    being largely reworked and re-thought-out.