Update Cost Management Plan

[kuku-prog]

I removed all the paragraph that was there. I did not know if I was supposed to update that writing or do something new. I put some thing short with a table mainly based on the project charter. Please feel free to add or take stuff out. I still have the copy of the previous writing if there is an interest to put some points from it.

[mdconatser]

made comments

[jahanbbhat]

Reviewed, this can be closed.