Added mentor Slack usenamees and resource for copyright status tool.

Author: kgodey

content/gsoc-2019/contents.lr

@@ -18,12 +18,12 @@ Before you submit a proposal, read our [Application Instructions](/gsoc-2019/app
 
 Here are short bios of each of our 2019 mentors.
 
-* [Alden Page](https://creativecommons.org/author/aldencreativecommons-org/)
-* [Breno Ferreira](https://creativecommons.org/author/brenoferreira/)
-* [Hugo Solar](https://creativecommons.org/author/hugocreativecommons-org/)
-* [Kriti Godey](https://creativecommons.org/author/kriticreativecommons-org/)
-* [Sophine Clachar](https://creativecommons.org/author/sclachar/)
-* [Timid Robot Zehta](https://creativecommons.org/author/timidcreativecommons-org/)
+* [Alden Page](https://creativecommons.org/author/aldencreativecommons-org/) (`aldenpage` on Slack)
+* [Breno Ferreira](https://creativecommons.org/author/brenoferreira/) (`Breno` on Slack)
+* [Hugo Solar](https://creativecommons.org/author/hugocreativecommons-org/) (`hugo` on Slack)
+* [Kriti Godey](https://creativecommons.org/author/kriticreativecommons-org/) (`kriti` on Slack)
+* [Sophine Clachar](https://creativecommons.org/author/sclachar/) (`Sophine` on Slack)
+* [Timid Robot Zehta](https://creativecommons.org/author/timidcreativecommons-org/) (`Timid Robot` on Slack)
 
 ### History
 

content/gsoc-2019/project-ideas-collection/copyright-status-tool/contents.lr

@@ -20,6 +20,7 @@ We'd like public domain resources to be reused and remixed and a good first step
 ---
 resources:
 - [The Creative Commons Catalog API](https://api.creativecommons.engineering/)
+- [General documentation on how copyright is modeled in Wikidata](https://www.wikidata.org/wiki/Help:Copyrights)
 - ["public domain date" property on Wikidata](https://www.wikidata.org/wiki/Property:P3893)
 - ["copyright status" property on Wikidata](https://www.wikidata.org/wiki/Property:P6216)
 - [The Metropolitan Museum of Art Collection API](https://metmuseum.github.io/)