Blender Git Loki

Attempt at providing the best possible flexibility and usefulness with
"Flush":

- There are now two modes, "Flush" and "Justify". Justify only flushes
a line when it is *terminated* either by wordwrap or by Enter.

- "Flush" *always* flushes the line, also when it's still being entered.

This mode can be used for things like this:

http://pub.intrr.org/flush.png

..while "Justify" would not flush the second line.

- Fixed "Flush" squeezing all characters on the same spot if the textframe
was set to 0 width