Fix bug 867686 - Allow YouTube embedding, change var name
Merge pull request #1145 from groovecoder/just-LICENSE-file

add just a MPL2 LICENSE file
Merge pull request #1136 from darkwing/youtube-867686

Fix bug 867686 - Allow YouTube embedding
Merge pull request #1142 from groovecoder/revisions-unified-diff-880020

fix bug 880020 - handle diff calls with None
Enhance YouTube button flexibility
Merge pull request #1146 from darkwing/youtube-plugin-enhancements

Enhance YouTube button flexibility
Update sitemap date output to correct YMD
fix bug 880197 - Upgrade Prism highlighter
Merge pull request #1144 from darkwing/prism-880197

fix bug 880197 - Upgrade Prism highlighter
Merge pull request #1141 from darkwing/update-sitemap-date

Update sitemap date output to correct YMD
fix bug 877369 - use seoSummary for result display