Update titles of unit tests pages to reflect new script names
Add stubs for Date and Number in tests/ (just aliases for now)
Remove deprecated module from tests of scope-level8-log

I replaced the deprecated module scope-level2-shared-imports
with the more limited but safer module scope-level2-shared.

I also had to add stubs for the modules Date and Number required
by the scope-level8-log module, which would no longer run otherwise.
Update roadmap

I added a scope implementation based on LABjs back to the roadmap,
based on the clarification that although no new major release is
planned, the library is actually still maintained.