Sliced the description to exclude the section tags

[WesleyTran0]

Purpose

Removed the weird tags in the course description from the description in the backend.

Tickets

#239

Contributors

@WesleyTran0
@mehallhm Thank you for the help <3

Feature List

• sliced the decoded message pulled from banner
• added a comment explaining what was sliced out

Reviewers

Primary reviewer:

• Pick one primary reviewer
  • The team member with the most relevant knowledge about the code area this PR touches
  • NOT an author of the PR
  • If the primary reviewer is the project lead, select two primary reviewers
    • Goal: facilitate knowledge transfer to other team members
  • Primary reviewers are required to approve the PR before it can be merged

Primary:

Use the "Reviewers" feature in Github
@mehallhm @ananyaspatil

Secondary reviewers:

@ItsEricSun @cherman23 @nickpfeiffer05

Secondary:

[coveralls]

coverage: 79.716% (-0.03%) from 79.75%
when pulling d337717 on html_tags_in_course_desc
into bbf63ba on master.