Minor fix for endSentence, gfRandom functions modified but no longer used, random sentence generation experimented with.
Adjusted kill thread time.
Removed fixWords, was preventing words not in dict from being printed messing up sentences.
Removed old Markov and some commented gfRandom code, these methods seem incompatible with my method.
Made some magic numbers less magical.  Make sentence do gfRandom if all else fails.
Revert "Made some magic numbers less magical.  Make sentence do gfRandom if all else fails."

This reverts commit 3498d677ba96297c2c56a194cc67e0397469366c.
Changed cleanString function, tidied up gfRandom, reverted last revert.