Eclipse warnings

Hi,

This is a janitorial pull request. I have included resty-gwt in my project's workspace and eclipse emits several warnings. I have created the patches for the different type of warnings. 

I think all patches are pretty uncontroversial except the last patch which can be regarded as a change of coding style.

I am a newbie to git/github otherwise I would send in a pull request only the 5 first patches.

   Regards