Option to hide default soft keys

[Efreak]

1. See issue #3.
2. See issue #4.
3. Add (optional) separate buttons for 'recent apps' and launching items as well. Some of us have twitchy fingers and can't keep them still long enough to long-press.
4. Hiding the navbar would be nice. There shouldn't really be any need to install another app just for this.
5. Home button shouldn't need long-press to open launchers. Perhaps implementing it as a gesture would be better. Not really terribly important. Related to 3 above.
6. Rectangular buttons would be useful. I'll make some myself and submit a pull if I have time, but anything I make would likely be inferior quality (made in paintbrush, not photoshop).

[rhoadster91]

Issue 3 has been fixed in my working directory, will push changes to GitHub once I clean up all issues

For issue 5, I have intentionally kept long press for opening launchers. If not, accidental swipes will launch applications.

Issue 6 is purely a theming issue. I am not very good at designing, so I am relying on someone else to do that for me.

Working on Issue 4