FrostWire 5.1.5

* Bug fix on setup wizard for some window configurations where controls would not appear unless the user resized the window.
* Bug fix on keyword search filter, wrong keyboard event was being used.
* UX adjustement in the way transfers are sorted when the application is launched.
* UX upgrade where Search Field on the Library now reacts to the DELETE key.
* UX upgrade where the FrostWire left hand side components are laid out correctly after the user resizes the window from much smaller dimensions.