Change html-theme for testing purposes

.../html/_static/bootswatch-2.3.2/readable/bootstrap.min.css

...d/html/_static/bootswatch-2.3.2/simplex/bootstrap.min.css

...ild/html/_static/bootswatch-2.3.2/slate/bootstrap.min.css

.../html/_static/bootswatch-2.3.2/spacelab/bootstrap.min.css

...ld/html/_static/bootswatch-2.3.2/spruce/bootstrap.min.css

...html/_static/bootswatch-2.3.2/superhero/bootstrap.min.css

...ld/html/_static/bootswatch-2.3.2/united/bootstrap.min.css

.../html/_static/bootswatch-3.3.6/cerulean/bootstrap.min.css

...ild/html/_static/bootswatch-3.3.6/cosmo/bootstrap.min.css

...ld/html/_static/bootswatch-3.3.6/custom/bootstrap.min.css

...ld/html/_static/bootswatch-3.3.6/cyborg/bootstrap.min.css

...ld/html/_static/bootswatch-3.3.6/darkly/bootstrap.min.css

...ld/html/_static/bootswatch-3.3.6/flatly/bootstrap.min.css

...c/bootswatch-3.3.6/fonts/glyphicons-halflings-regular.eot

...c/bootswatch-3.3.6/fonts/glyphicons-halflings-regular.svg

...c/bootswatch-3.3.6/fonts/glyphicons-halflings-regular.ttf

.../bootswatch-3.3.6/fonts/glyphicons-halflings-regular.woff

...bootswatch-3.3.6/fonts/glyphicons-halflings-regular.woff2

...d/html/_static/bootswatch-3.3.6/journal/bootstrap.min.css

...ild/html/_static/bootswatch-3.3.6/lumen/bootstrap.min.css