support click integration

[kamilsk]

/goto?url= and /goto/alias are "clicky" links and should be configurable.

Also, blocked by https://github.com/kamilsk/click/issues/43

[kamilsk]

do I need to extend isPage function to use isClick?
do I need to add metainformation to events?

[kamilsk]

the better way (I think):

$ check urls https://blog.octolab.org/ | tee report.txt | check redirects

[kamilsk]

will be done with #43