TISTUD-6837 Index translation key references in Titanium Mobile JS files
- make some minor adjustments to JS parser to get more detailed type info on some children nodes. (Specifically a JSInvokeNode always has two children, and the second is a JSArgumentsNode. Also, the second child of a JSGetpropertyNode is always a JSIdentifierNode)
Merge pull request #250 from sgtcoolguy/TISTUD-6837

TISTUD-6837 Index translation key references in Titanium Mobile JS files