Update import order settings to list all top-level packages

Eclipse installations disagree about where to put unmatched top-level
packages. Settle this ambiguity by listing all top-level packages used
by Gerrit. Also explicitly include unmatched static imports.

The import order thus listed corresponds to the Google Java Style
Guide:

https://google-styleguide.googlecode.com/svn/trunk/javaguide.html#s3.3.3-import-ordering-and-spacing

Organize all imports to reflect the new reality.

Change-Id: I7c541b1c522e66869669d2291dcf78ff1d8784d0
4 files changed