Author: David Monllao
MDL-49085 block_tag_youtube: Using Youtube data api v3
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3058d15ff4b7b50de672a92e5c9ef9d57351cade
http://github.com/moodle/moodle/commit/3058d15ff4b7b50de672a92e5c9ef9d57351cade
+ 2.8 en [apierror,block_tag_youtube]
+ 2.8 en [apikey,block_tag_youtube]
+ 2.8 en [apikeyinfo,block_tag_youtube]
+ 2.8 en [requesterror,block_tag_youtube]