2.5

2.5

First step towards keymap editor!
Before getting too excited:
- doesn't save yet
- no rna properties can be defined
- no insert/remove keymap options yet
- no option yet to set 'key press/release'

But what does work;
- Keymap list is in outliner, new category
  (Keymaps are listed in order as being created now)
- enable/disable a keymap entry: click on dot icon
- it displays python api names for ops
- browse new operator for keymap (menu button)
- set keymap to use other keys, mouse or tweak events
- four modifier key options

I first intent to test it all well, there are still
quite some modal map conflicts (like border select) and
there's problems assigning items to tweaks

Another issue is that a visual editor for keymaps might be
quite hard to use... the amount of data and options is just not
so fun for a buttons menu. There are ways to improve this though.
Maybe do this via a script?