Create a score breakdown table in candidate report

[manishrjain]

We need to create a matrix view table for score breakdown, based on tags. Ideally each question should only have 2 tags: an hardness level (easy, medium, hard) and a category (systems, algo, time complexity etc.). Assuming that's true for our questions (mostly it is), we need something like this.

This way we can check how strong is a candidate in each field. For now, this should be sufficient, but later, we might want to show the percentile breakdown as well. That's for later though.

....	Systems	Algorithms	Data structures	Time complexity	Concurrency	Total
Easy	5	2	3	4	5	(5+2+3+4+5)
Medium	1	4	2	2	1	10
Hard						total
Total	6	6	5	6	6

[manishrjain]

Actually, reverse the order. Categories as rows, and hardness as columns.