Merge pull request #18 from yerzhik/master

Closes #1, Closes #2, Closes #10
Added guava, unit test libraries, metamodel generator library.
Added jersey library with test scope required for unit-testing JAX-RS web services
Added persistence support; implemented and unittested login.
Closes #11
Added error message for login form.
Restructures javascript code
Renamed "login" field to "name" field; implemented AJAX server request to login