Updates to README and code fixes found while installing and testing

I've updated the README file with additional notes about including MySQL driver, information about default account values, and fixing curly double-quotes used in the Resource XML.  These may come in handy for other potential users.

I came across exceptions rendering fields while viewing the Minimum/Recommended Requirements page.  Removed a superfluous setField() method in ViewFieldValueTag.java to resolve the issue.  

Finally, updated .gitignore to ignore the maven target directories.