Update how section type is determined in Patriot Web parser

[zacwood9]

For ECE 286, Patriot Web reports that two of the recitation sections are labs, even though "recitation" is in the course title. Update the parser so that is "lab" or "recitation" is in the course title, use that for the section type, otherwise use what is reported in Patriot Web as a fallback.

See #load_sections in db/seeds.rb.