Fix #67, Combine consecutive, mutually-exclusive status checks

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution

• Fixes Combine consecutive, mutually-exclusive status checks #67
  • 3 separate pairs of consecutive, mutually-exclusive status checks combined into if/else constructs.
  • Code changes are in cs_app.c and cs_init.c
  • Some typos corrected as a piggy-back on this PR.
  • Also capitalised EEPROM in all text (was inconsistently capitalised previously).

Testing performed
GitHub CI actions (incl. Build + Run, Unit Tests etc.) all passing successfully.

Expected behavior changes
No change to logic.
Single evaluation instead of twice in these if blocks now.

Contributor Info
Avi Weiss @thnkslprpt