core: let gettext show an error if a po file could not be read (instead of crashing)
core: emqtt, use the standard Erlang stdlib 'eacces' as error.
docs: fix example of lazy loader in combination with moreresults action
core/modules: changes to controllers for new webzmachine return values for provided charsets and encodings. See https://github.com/zotonic/webzmachine/issues/14