pages (common/blog): URL improvments: - if target_profile is set, user_blog is used for links instead of blog, making the URL nicer (by using profile instead of service and node) - added part of title or content to URL, to make it more explicit

try:
    from common.constants import Const as C
except ImportError:
    pass # import doesn't work at this stage with pyjamas
else:
    __version__ = C.APP_VERSION