Merge recent changes

ce311c23 updated merchants list and fixed broken links (erciccione)

84da8394 Add link to GitHub from menu (Robby Weinberg)

2ba634c6 updated RingCT obsolete description (erciccione)

5fa27614 Logs for the Kovri meetings held on 2017-06-04 + 2017-06-11 and logs for the Dev meeting held on 2017-06-11 (dEBRUYNE-1)
45ce311e Logs for the Dev meeting held on 2017-05-21 (dEBRUYNE-1)

bf3b95c0 automatic security (tokjingga)

e91cfc6c Removing broken link to Rocket Chat rocket.xmrnation.com (Jonathan Cross)

Logs for the Kovri meetings held on 2017-06-04 + 2017-06-11 and logs for the Dev meeting held on 2017-06-11

Downloads section changes

Up to date?

29cdad7b Logs for the Kovri meeting held on 2017-04-23 (dEBRUYNE-1)
84cb56e5 Logs for the Kovri and Dev meetings held on 2017-05-07 (dEBRUYNE-1)

7f74e8cd Update merchants.yml (RootBox-Kevin)

be744aa1 Update 2017-04-19-an-unofficial-response-to-an-empirical-analysis-of-linkability.md (SamsungGalaxyPlayer)
475fc5ea Update 2017-04-19-an-unofficial-response-to-an-empirical-analysis-of-linkability.md (SamsungGalaxyPlayer)
85d4d2e1 Update 2017-04-19-an-unofficial-response-to-an-empirical-analysis-of-linkability.md (SamsungGalaxyPlayer)

2e43f778 Update 2017-04-19-an-unofficial-response-to-an-empirical-analysis-of-linkability.md (SamsungGalaxyPlayer)