[Suggestion] A keybind window about tacentview

[bluescan]

4b93697 closes. Note that the changes were extensive enough that a previous version config will be reset on load.

[bluescan]

About 70% done on this one. Currently have it so that the reset profile calls in the preferences will reset bindings too... not sure if a good idea as you can also reset from the bindings window.

[bluescan]

Note to self: Todo

1. [done] The 'Set All Profiles' button on bindings window.
2. [done] Warning popup if replacing existing binding.
3. [done] Warning if removing shortcut to bring up bindings window. If menu-bar off and no menu binding key could get in situation where impossble to restore without deleting viewer.cfg. SOLN used was ctrl-shift TAB is a permanent binding to take you to the bindings screen.
4. [done] Do not reset binding with the buttons in prefs. Tell user to use the keybindings window if they need to be reset,
5. [done] Menu shortcut keys need to come from keybindings. Show first key bound (since mult keys may bind to same operation).

At this point just need to do a bit more testing b4 closing.