lexer bugs

[Fabian Maurer]

• lexer crashes on comment( if comment is on start ?) - fixed
• lexer too slow - fixed
• lexer doesn't find keywords - fixed
• lexer treats label Story_2 paritally as number, the 2 gets colored - fixed
• lexer detects "/" as operator - fixed*
• Xoption still recognized as "option", due to missing check to the left - fixed

[mezzodrinker]

Working on a re-edit with more accurate element selection