Update index.html with JonDo live-CD, class 'i18n-jondolive-desc'

Requested in https://github.com/nylira/prism-break/issues/574
Couldn't upload the logo file through GitHub's web interface, so URL is referenced instead.
Update index.html
Update en.json with i18n-jondolive-desc

companion commit to https://github.com/Cathryne/prism-break/commit/f9936c18e677e9f53b91f51a64470ab9cee978e8
Update de.json with i18n-jondolive-desc

companion commit to https://github.com/Cathryne/prism-break/commit/4b41300e832e94c6ffbb29a3a2073f1c3ccd2437
Update en.json with typo correction
Update index.html - fixed broken tags, but not the image (yet)

Not sure when I'll have the time to install git locally just to insert the image file, sorry.
Update index.html
Update index.html

added JonDo logo & fixed a few more tags
added JonDo logo file
Update index.html
add Jondo Live CD
Merge branch 'master' of github.com:nylira/prism-break