Set up Project board

[Patamap]

As agreed with @gmajan, the one repo should have only one board in order to track all development issues and documents issues in one board.

Actions are

1. Set up board rules (simple, no backlog, duplicated approved/done).
2. Document.

Related to #59

[Patamap]

1. "Moja Global Project Workflow in Github" documentation is created and completed.

2 Updated project board page 3 on Moja Global for "Process for the use of requirement/issues and boards with labels "the document is updated.

Next Step:
Create the project board to the repo, if needed.
@gmajan @Tlazypanda