Add description blurbs that happen to be picked up by facebook’s link blurb generator, somewhat addresses bug #90.

We have per-tab blurbs expanding the sections and a page-wide blurb listing the courses.

Fix support for displaying the number of credit hours in a permutation for schools with course slots, reported by bot10berg.

https://www.facebook.com/zimjimmy/posts/231316953666045?comment_id=886608&offset=0&total_comments=11
The linked schedule was displaying 24 credit hours instead of 14
credit hours because there were two course slots with two sections
each (each of these course slots having 4 credit hours) causing 8
credit hours to be doubly-counted.

Fix qTips not appearing for certain courses because of partial XML underquoting.

Some courses which had ampersands in their titles would cause XML parsing errors in
the browser when trying to display the qTip, resulting in the qTip not showing
for those courses. This is because the qTip’s content is inserted as XHTML into
the document, so it needs to be doubly encoded.

Crawl and store credit-hours per section. Display credit-hours, but provide no UI for updating them. Fixes bug #114.

Credit-hour crawling support for calvin and cedarville.

Fix PHP strict warnings due to using Schedule::url() as both static and object method.

Introduce Schedule::my_url() as an object method and convert Schedule::url() into a static method.

Save the school_id and semester data with a saved_schedule. Make the school_id and semester local to the input page.

Now one can open multiple tabs and be using autocomplete for multiple semesters/schools using the same session.

Ensure that the registration codes shown actually correspond to the current tab.

Previously, the registration codes for the following tab instead of the current tab were being displayed.

Fix some php errors by removing empty courses completely.

This case was not caught before because courses may appear to be nonempty during the parsing of POST data. Thus, an additional filtering process was added.