Improved automatic space rules

[sspanak]

0. Get rid of TextField.isThereText()
1. Add a space after accepting a word when the next character is \n.
2. Add a space when typing a letter or word, after a digit. - not doing this one. It allows for typing "4chan" or "2x".
3. Do not add a space after digit+punctuation[+space].
4. Add a space before opening quote marks. - not doing it. It may not be what the user wants.
5. Add a space after closing quote marks.
6. Maybe add a space after number+currency?