Static strings can not be translated until wxLocale is initialised.

This reverts commit 0004b6004b726535275ceb96c8493c195fd79401.

Conflicts:
	Source/Core/DolphinWX/VideoConfigDiag.cpp

Otherwise the build fails if libusb is not found

This scanning thread either polls libusb or checks every 500ms for a
change depending on host capabilities. The GC Adapter can now be plugged
and unplugged at any time when dolphin is open, it will be used if the
direct connect option is set.

- Simplified the locking mechanism when controllers were updated
- Reloaded the config of the controls instead of re-initialising the control plugins
- Fixed controls being unresponsive after the Refresh button was pressed
- Disables the hotkeys while the controller config is open

Removes the requirement for stack allocated InputConfigDialogs to call Destroy. This shouldn't be necessary for wxDialog derivatives.
This also fixes a leak that would occur every time an InputConfigDialog is opened and closed. wxWindow subclasses (this includes wxDialog) only destroy child windows and sizers (including things in the sizers). So every wxTimer allocation would have resulted in a leak.

Minor consistency changes