Hardwire escape key to cancel action on Windows.

wxWidgets currently has a bug that prevents the Esc key to be used in an accelerator table, therefore we hardwire the key for now while the bug gets fixed (see http://trac.wxwidgets.org/ticket/3813).
Merge branch 'NewArchitecture' of github.com:kduske/TrenchBroom into NewArchitecture
Cosmetic changes to rotate tool page.

- Moved reset button to front.
- Increased width of angle field
- Select Z axis by default.