Makes hosted mode really, really work with -noserver when the remote process is serving from your WAR folder.

- The reason for the refactor is that the code now captured in HostedMode.doStartup() was not getting run in -noserver mode
- Will sort in a follow-up commit.

Review by: bobv


git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/1.6@4317 8db76d5a-ed1c-0410-87a9-c151d255dfc7