Fix 10.x sections showing up in 1.x section

* The eachSection regex was allowing more sections to qualify than it
  should have.
* For example, when rootNumber is 1, sections labeled 10.* and 10
  were also matching, thus having all the sections for 10 repeated
  under section 1.
* This update will have it now match either '1', '1.', or '1.*'

Test suite still passed and sections now show up correctly.