cla-individual draft ok
cla-individual and cla-entity draft for discussion
relative link to contributing.md
relative link to both cla's contributing.md
moving Harmony project attribution to contributing.md. contributors need to add there github name. entities need to add  entity info
removed external links from the CLA text, since links may break.
reversed contributing.md, since it will be created automatically. Use the Contributing.tid instead. Minor tweaks to CLA's
added Unamesa Association as (We or Us). Got OK from Jermolene to use CC-BY for media content.
Merge pull request #161 from pmario/activate-clas

First pass at a Contributors License Agreement (thanks to @pmario)