Fix semantic indentation of quoted functions

[rschmukler]

Fixes an error where quoted functions would not align correctly with semantic indentation. Adds an example to the test sample.

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Thanks!

[rschmukler]

@bbatsov Upon thinking about this further, I think that the proper name should actually be var-node-p or variable-node-p. The problem is that there is already a variable-node-p which returns whether a node is a def or defonce. I think we should do the following:

1. Rename the existing variable-node-p to variable-definition-node-p
2. Rename quoted-var-node-p to var-node-p

I think calling it anything else will be a bit confusing since it is technically a variable... ie:

(type #'filter)
;; => clojure.lang.Variable

I have updated the PR with these changes, but I am also happy to change it to whatever you want. Let me know!

[rschmukler]

@bbatsov just pinging you on this. No rush, just a reminder :)