feature: theme switching via API,
closes https://github.com/enketo/enketo-express/issues/11
fix: styling of pages-mode buttons
fix: stretch small forms or pages to full height of screen
fix: false 'edited' event,
closes https://github.com/enketo/enketo-express/issues/14
Merge branch 'master' of https://github.com/kobotoolbox/enketo-express