add rotate around std axes to existing menus.

Added a MMB aspect to rotate X,Y,or Z. Which allows
the user to rotate around standard one of standars axes
through the origin.

User no longer needs to add a temporary object to scene in
order to rotate around the global x,y,or Z axis.  MMB
option for through origin now available.
NOTE: Added constraints to Sculpt mode menu. [optigon]
NOTE:
- Fixed crash caused by user hit ENTER in a dialog and the focus is in the expand/collapt button; (thanks to oort) [Micheus]
- Fixed hard crash caused when a dynamic sub-menu (like Render) doesn't have any item; (thanks to oort) [Micheus]
- Fixed the start value to Edge component. Different of the others it was starting from 1 - now it starts from 0; (suggested by Caverman) [Micheus]
- Fixed the bad display of values for the columns Volume and Area in the Tools->Scene Info. (thanks to ggaliens) [Micheus]
NOTE:
- Fixed crash caused by user hit ENTER in a dialog and the focus is in the expand/collapt button; (thanks to oort) [Micheus]
- Fixed hard crash caused when a dynamic sub-menu (like Render) doesn't have any item; (thanks to oort) [Micheus]
- Fixed the start value to Edge component. Different of the others it was starting from 1 - now it starts from 0; (suggested by Caverman) [Micheus]
- Fixed the bad display of values for the columns Volume and Area in the Tools->Scene Info. (thanks to ggaliens) [Micheus]
New dialog for Image Plane resource.
NOTE: It was improved the Image Plane resource by adding a dialog box for
enter options like: location, rotation around origin, lock it after
created and assign a transparent material for its back face (this make
possible to see trough the image plane in proxy mode). Thanks oort by the
idea and support as well to Ran13. [Micheus]
New dialog for Image Plane resource.
NOTE: It was improved the Image Plane resource by adding a dialog box for
enter options like: location, rotation around origin, lock it after
created and assign a transparent material for its back face (this make
possible to see trough the image plane in proxy mode). Thanks oort by the
idea and support as well to Ran13. [Micheus]
The Image Plane dialog now supports the dialog preview resource.

	modified:   plugins_src/primitives/wpc_image.erl
Fixed an important issue introdued by me in the previous revision.
Note: - Fixed an error introduced to .pov file by adding an object statement for ambient light (POV use it on global settings statement). Thanks Kagehi for report it. [Micheus]
- The path for Images used in textures (pigment/normal) now is relative to the place where the exported file is saved. [Micheus]
- Added the function to get relative path into wings_u.erl.
NOTE: Fixed the wrong selection of elements when using the option Material->Select in the Outline window if selection mode isn't Face or Body. Also, its context menu supports multiple options and it was added two new options: "Add to selection" and "Remove from selection". (Thanks to deerwood that reported the bug and suggested the new options) [Micheus]
NOTE: Added a new option to Windows menu ("Selection Groups") that implements the selection commands in a window as follow:
LMB
  - Select the group itens in the Geo win;
RMB
  - With a group selected:
- above it self or in empty area: Delete/ Delete Invalid Groups;
- above another group: Delete/ Delete Invalid Groups/ Union/ Subtract/ Intersect;
  - Without a group selected and none selection in Geo win:
- above a group: Delete/ Delete Invalid Groups;
  - Without a group selected but with an selection in Geo win:
- above a group: New Group/ Delete/ Delete Invalid Groups/ Union/ Subtract/ Intersect/ Add to/ Subtract from;
- in an empty area: New Group;

It was suggested by Fonte Boa. [Micheus]
NOTE: Added a new option to Windows menu ("Selection Groups") that implements the selection commands in a window as follow:
LMB
  - Select the group itens in the Geo win;
RMB
  - With a group selected:
- above it self or in empty area: Delete/ Delete Invalid Groups;
- above another group: Delete/ Delete Invalid Groups/ Union/ Subtract/ Intersect;
  - Without a group selected and none selection in Geo win:
- above a group: Delete/ Delete Invalid Groups;
  - Without a group selected but with an selection in Geo win:
- above a group: New Group/ Delete/ Delete Invalid Groups/ Union/ Subtract/ Intersect/ Add to/ Subtract from;
- in an empty area: New Group;

It was suggested by Fonte Boa. [Micheus]
NOTE:
- Added a new option "Rename" group; suggested by Fonte Boa
- Improved visual feedback by adding mouse tracking - the group name under mouse pointer is framed;
- Changed the default window position to up/left side of the window desktop.
NOTE: - Wings core (wings.erl and wings_plugin.erl) was changed in order to make possible all windows used in a plugin be saved/restored automaticly;
- updated wpc_sel_win.erl in order to use the new resource, saving and restoring its placement on Wings desktop.
NOTE: - Wings core (wings.erl and wings_plugin.erl) was changed in order to make possible all windows used in a plugin be saved/restored automaticly;
- updated wpc_sel_win.erl in order to use the new resource, saving and restoring its placement on Wings desktop.
NOTE: - Wings core (wings.erl and wings_plugin.erl) was changed in order to make possible all windows used in a plugin be saved/restored automaticly; [Micheus]
- updated wpc_sel_win.erl in order to use the new resource, saving and restoring its placement on Wings desktop;
- removed the option "Remove Invalid Groups" that was maintained by accident.
Merge branch 'mv/select_win' of http://github.com/Micheus/wings into mv/select_win
Merge remote-tracking branch 'origin/vip/dgud/pbr-reorg' into pu

* origin/vip/dgud/pbr-reorg:
  Add progress bar rendering setup info
  Intel driver workaround cl:finish doesn't seem to work.
  Handle pbr-render start and stop better
  Set default colors to be matte and not blank
  Add pbr stuff to installers
  Fixes required for Intel OpenCL drivers
  [pbr] Create render options
  Area lights and textures Implemented area ligths Added texture (and bumpmap) support and cleaned up material handling
  Diffuse alters skylight and sunlights gain
  Bugfixes
  Fix camera matrixes left-right handedness
  Added image support and fixed some bugs
  More film functionality
  Change lights up vector to wings coord system
  Update to match luxrender latest version
  Initial rendering test
Merge remote-tracking branch 'micheus/mv/select_by_material' into pu

* micheus/mv/select_by_material:
  NOTE: Fixed the wrong selection of elements when using the option Material->Select in the Outline window if selection mode isn't Face or Body. Also, its context menu supports multiple options and it was added two new options: "Add to selection" and "Remove from selection". (Thanks to deerwood that reported the bug and suggested the new options) [Micheus]
Merge remote-tracking branch 'optigon/rj/sculpt_constraints' into pu

* optigon/rj/sculpt_constraints:
  NOTE: Added constraints to Sculpt mode menu. [optigon]
Merge remote-tracking branch 'micheus/mv/bugs1.4.1.a' into pu

* micheus/mv/bugs1.4.1.a:
  NOTE: - Fixed crash caused by user hit ENTER in a dialog and the focus is in the expand/collapt button; (thanks to oort) [Micheus] - Fixed hard crash caused when a dynamic sub-menu (like Render) doesn't have any item; (thanks to oort) [Micheus] - Fixed the start value to Edge component. Different of the others it was starting from 1 - now it starts from 0; (suggested by Caverman) [Micheus] - Fixed the bad display of values for the columns Volume and Area in the Tools->Scene Info. (thanks to ggaliens) [Micheus]
  NOTE: - Fixed crash caused by user hit ENTER in a dialog and the focus is in the expand/collapt button; (thanks to oort) [Micheus] - Fixed hard crash caused when a dynamic sub-menu (like Render) doesn't have any item; (thanks to oort) [Micheus] - Fixed the start value to Edge component. Different of the others it was starting from 1 - now it starts from 0; (suggested by Caverman) [Micheus] - Fixed the bad display of values for the columns Volume and Area in the Tools->Scene Info. (thanks to ggaliens) [Micheus]