Address issues with offline analysis guide
Address various issues in the offline CBC analysis guide brought up in #96 (closed):
- Order of operations for some steps was not correctly illustrated so could cause problems for someone running the analysis for the first time.
- Generalize usage for generating x509 proxys so it's more portable. (ICDS did things differently than was expected)
- Fix a few commands so they work as-is.
- Word wrap some paragraphs.