Added translation in Inspector.
	modified:   mscore/inspector/inspector.cpp
Fixing minor issues in shorcut capture dialog.

- If clear is a QToolButton it cannot be pressed using Enter
- If clear is pressed, Add button and Replace button must return
to the disable state, like when the dialog starts
	modified:   mscore/shortcutcapturedialog.cpp
	modified:   mscore/shortcutcapturedialog.ui