Story DSL ending with text without newline makes parser get stuck

[vorburger]

While testing the comment about how to reproduce #301 while reviewing #332, I found that adding "La Fin." at the end of dynamic-test.story WITHOUT a CR / LF (?), that makes the parser get "stuck" and loop infinitely somewhere - a DOS! 😈

[vorburger]

In #332 @edewit also removed the following from StoryParserTest which we should add back when we fix this bug:

@Test public void blanks() throws SyntaxErrorException {
    Story story = getStoryParser().parse("   \n \r\n  ");
    assertThat(story.getActionsList(), hasSize(1));
}

[vorburger]

@edewit this is likey related to why you added \n to inline JS? That's perhaps a bigger problem than the EOF...

As-is now (with #332) it could be confusing how a .story gets "broken" if you forget the \n in a return "hello".

[edewit]

The fix for the empty line will fix this as well