Recoloring

Brightened up the lines. Looks better now imo. :)
gitignore for "settings.php"

... self-explanatory, no? :P
No empty names.

Disallowing empty ("") and space-filled ("    ") names; they won't be
changeable (because not clickable) else.
Live update.

Live update on moving a player. "Dragging", like some people call it. :P
Cleared SITE_DOMAIN.

Keeping SITE_DOMAIN empty results in a dynamic script, plus it works
out of the box.
That's possible because every link in CSS, HTML, ... without "http://"
prefix is relative to the main document, index.php in this case; the
browser is using the same domain and port information it used to access
index.php.
Design upgrade. =]

- All elements are now unselectable (selection was done when dragging
the players)
- Player labels are now displayed inside a rounded box with a
transparent-black background, plus they are brightened up on hover
(0.5s transition)
Player init position

Moved the Players into #gas-container on initial positioning.
(substitute's bench? idk.)
11+ players