Wrapped Frontend Render Safety Checks

[rgu0114]

Summary

Logic fixes and safety checks to make sure data exists. Also refactored code and corrected number of slides. Made the fav [blank] slide data loaded in and affecting slides displayed as one unit.

Test Plan

Tested on prod database

[dti-github-bot]

[diff-counting] Significant lines: 79.

[NIDHI2023]

just these few changes and should be good!

[NIDHI2023]

Not related to this PR but as future side note:
const StudentsHelpedBanner = () => ( <div> <Asterik/> YOU HAD THE MOST VISITS IN {month} <Asterik/> YOU HAD THE MOST VISITS IN {month} <Asterik/> </div> );
month is for the most common month you as a user visited office hours while this needs the month in which the most students came, so we'd need to make a separate variable/calculation for what's on this banner!