Text on Browse page needs to be adjusted

If we change the numbers that the browse page shows, then we should also be changing the text at the top to be more accurate.

"Click a subject to see a list of all the learning resources in that category. The number in parentheses shows how many matching results are on the site right now."

Will be even more wrong.

I'll also note that if these numbers do not match the "Watch Curriki Grow" numbers then it will look more like we are lying than right now (I know I wouldn't donate to a site that claimed a high number and then nothing could be found to support that and even look like it refutes it).