docs: rebuid docs, remove mod_seo_google refs. Issue #149
Removed duplicate sitemap seo settings template. Fixes #587
base: add new 'trim' filter.

Close #712.
zotonic_status: fix crash on admin url fetch for disabled site.
core: Update dispatch info on start and stop of a site.

Fixes #714

This seems to be the most simple solution. Downside is that on Zotonic
startup the dispatch rules are reloaded several times (for each starting
site).
zotonic-tpl-mode: fix indentation issue.

indentation was wrong for self-closed tag with embedded template tags.
(see example in test case 12).
mod_survey/admin_fronted_edit: set acl permissions on dispatch rules for page editing and survey-results.
mod_artwork: remove query part from webfont urls. Our lib controller doesn't like that.
mod_artwork: load font-awesome font via abs url, as the '..' doesn't work with combined css urls.
mod_artwork: load font-awesome font via abs url, as the '..' doesn't work with combined css urls. (also minified css)
mod_survey: prefill some questions with equally named properties of the current user. Examples: phone, phone_mobile, address_street_1, etc.
mod_survey: fix results for multi-answer thurstone. Fix acl check on survey printable results.
mod_admin_frontend: fix acl check on edit dispatch
mod_survey: use survey categry title for tab block title
mod_admin_frontend: some extra nl translations
mod_admin_frontend: remove 'This', as it can't be translated well in connection with the category title.
doc: Update mod_twitter to show how to do Twitter login
core: Show error message in admin when a module fails to start

e.g. when it is missing any dependencies
mod_survey: add 'noprompt' class if the question has no defined prompt. Useful for changing css/margins depending on if label is filled in or not.
mod_survey: swap 'results' header and editable thank you text.