Tango :: some improvements

[ronso0]

The major change here is to have identical loop sections for left & right decks.
Initially, I tried to have all related controls close to each other, that's why the beatjump controls were directly below the Play button. While this is useful for mouse-only users, it turned out to be an annoying contradiction to how beatloop size & beatjump size encoder are positioned on controllers. I repeatedly looked at the wrong spinbox when turning the beatjump size encoder on the right deck of my controller... (left encoder: loop size, right encoder: jump size)
Now, loop/jump section is the same on each deck and the fillers are improved to visually attach those sections more to the decks above.

Other changes:

• fixed position of Master/head mixer hide/show button in top row
• adjust vinyl control buttons so that vinyl/passthrough enable buttons are easier to distinguish
• yellow Pfl icon to match other indicators (it was white previously)
• removed size parameter from elapsed/remaning track time so future time formats automatically fit in
• renamed templates to ease maintenance

before:

after:

[daschuer]

LGTM. Thank you.