Update Versioning System

[dzbaker]

Is your feature request related to a problem? Please describe.
The current versioning system could benefit from incrementing the Build Baseline after each release candidate, setting the Revision to 0 (instead of 99), and replacing the Version String with the Build Baseline/Codename.

Describe the solution you'd like

1. Build Baseline is incremented after each release candidate (it would be set to "equuleus-rc1" at the time of this issue)
2. Mission Revision is set to to 00
3. Addition of a Current Development Cycle Codename #define
4. Version String is removed, and all references to it replaced with the Build Baseline/Codename

Describe alternatives you've considered
The current system. It has some shortcomings, however, in that the build baseline is incremented very infrequently (which confuses users).

Requester Info
Dylan Z. Baker/ NASA GSFC