* UI capitalization policy fixes.
* Set OK button as the default.
* Use default dialog size to allow sizers to do their job.
* Minor grammar and abbreviation string fixes.
* SearchHelpFileFullPath(): clean up platform specific path code, add executable path sans bin
directory on non-osx platforms, and move KICAD path variable to the beginning of the search
list.
* Minor search stack debug output improvements.
* Make OK button the default in the copper zones properties dialog.
* Change the set global text edit properties menu entry so that is describes
what the dialog actually does.
* Make the clean up tracks and vias menu entry description more accurate.
* Move color conflict checking code into TranferDataFromWindow so that it can be used in both the
OK and Apply button message handlers.
* Change Erc to ERC in text labels.
* Check for color conflicts and give the user the option to dismiss the changes before applying them.
* Add color conflict checking when apply button is pressed.
* Use default dialog size to allow sizers to set the initial size of the dialog.
* Track the last used path for the current session.
* Set focus back to OK button after wxFilePickerCtrl button is pressed to change file path
and/or file name so next return key press fires OK event.
* Use default dialog size to let the sizers set initial dialog size.
* Add spacer to improve layout when resizing dialog.
* Use colons for consistency with other dialogs.
* Use default size to allow sizers to determine dialog size.
* Use "segment" rather than abbreviation "segm".
* Use width and height to describe text instead of X and Y.
* Add spacer to improve layout when resizing dialog.
* Use colons consistently in labels.
* Use default dialog size to allow sizers to size dialog.
* Fix control alignment and spacing consistency.
* Add spacer to improve layout when resizing dialog.
* Make control spacing and alignment consistent.
* Use default dialog size and to allow the sizers to do thier job.
* Add colons to per item labels for consistency.
* Fix error message box title capitalization per UI policy.
* Remove hard coded dialog size and let the sizers do their job.
* Minor UI policy text fixes.
* Minor text changes to improve readability.
* Minor tool tip changes to improve readability.
* Split graphic circle objects into two 180 degree arcs to prevent the
VRML_LAYER::AddCircle() function from obscuring objects in the hole
(cut out) area of the circle.