Use "wxWindows licence" and not "wxWidgets licence" (the latter doesn't
exist) and consistently spell "licence" using British spelling.
See #12165.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64940 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Also changed the license pages to include the actual license files verbatim rather than duplicated in comments.
Cleaned up the Development Tips page a little fixing some minor issues and wrapping at 80 columns.
Recategorized the WXDEBUG_NEW() macro from the RTTI group to the Debugging group.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52972 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
