In old versions of Rails, we would rely entirely on what was returned by
Dir.glob to determine the match and sorting of our templates.
Later we switched to building a regex on each search, which allowed us
to perform a much faster glob, find matching templates with the regex,
and then emulate the sort order based on captures from the regex.
Now we have PathParser, which can parse any template's details
accurately from just its filename (not depending on the query being
made).
This commit moves the matching to done on UnboundTemplates, effectively
using details found by the PathParser for both matching and sorting of
templates, and removing the dynamic regex for queries.
This should be faster at boot/after reloads as we're no longer building
a regex and additionally we only need to parse a template's path for
details one time (we can use the same details for matching/sorting in
future queries with different details).
9e0c42b0bd