Simplified Synchronous Tokenization

[Anviking]

The syntax highlighting is performed as operations in a NSOperationQueue. JLTokenPattern does dispatch_async to the main queue before adding the attribute to the textStorage, so calling -waitUntilFinished on the operationQueue is not helpful.

Could probably be solved in a hacky way, but thinking about reimplementing the JLScopeDelegate, moving add-attribute-to-textStorage-logic to the tokenizer, and adding some queue-logic-things there.