Use base64-encoded svg in dynamicLogo
Use base64-encoded svg in dynamicLogo

Previously, the SVG was using escaped XML, which seemed to be causing
problems with librsvg in some cases.

https://phabricator.endlessm.com/T28284

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib