Renamed files to enable a stable way to call blockify (./blockify, ./blockify_ui), seriously reworked blockify.py adding comments in many places and grouping duplicated code, also grouped functions that work with one another under a common banner. Many small functions were combined into one (e.g the ones that deal with window grabbing). Reintroduced the mute state and toggle_mute(False=unmute, True=mute), which is a first class method of dealing with the soundcard. Removed my name, it should come up in commits. Reworded the readme.