Issue #72 - Use formatting functions from Format.java in Editor.java

Move Timer keywords to Timer_KW[] to make a hole in Run.BasicKeyWords[].
Move ProcessKeyWords() and helpers from Format.Background to Format
and make them static. For now only ProcessKeyWords() needs to be public.
Remove formatting fns from Editor.java, use Format.ProcessKeyWords().
Count leading blanks and check for block quotes only once per line.
Change Format.ProcessIndents() to ignore all block quotes.
Remove special treatment in Format.ProcessIndents() for " _" string.