updated pagination tests
Fixed File::create_dir(), closes #1309
Have Theme::set_chrome() return the chrome object instance. Closes #1339
Merge pull request #1336 from SCIF/pagination

Made configurable first/last, next/previous markers
faster memcached section index update
Merge pull request #1341 from SlKelevro/faster-memcached-sections

Faster memcached section index update
Inactive patterns now have not {uri}. Added first/last inactive generation. Empty by default for bc