Tweak code to test dependencies on multi-line include.
Move caching into its own app.
Remove cyclical dependency between caching and updates.
Migrate to enforcing relative imports within an app.
Shift benchmark intra-app imports to relative.
Shift chronograph intra-app imports to relative.
Shift securesync intra-app imports to relative.
Shift centralserver.i18n intra-app imports to relative.