Added links to process steps in CAP process index

N.B. please do not cache if not a CAP mod

Repeatedly getting to process pages was annoying when 3 clicks were required, so now only 2 clicks are needed. Also, the process index looks a lot less empty now
Merge pull request #383 from smogon/62bed17f119bab53b070cdc68942672d

Added links to process steps in CAP process index (approved by Birkal)