Adjust layout of project wizard and change default project location

   - Mimic layout of NetBeans default project layout to make a uniform look across all the supported project.
   - Update project location to the NetBeans default project location.
   - Update Single Project's browse button label.
Merge branch 'master' of https://github.com/mam0nth/netbeans-gradle-project
The last project folder in the project wizard is now saved again.