[c9fcff3] set *print-right-margin* in REPL window
[Fix #844] Detect absense of var info

We weren't checking whether the info middleware response actually contained
any information at all.

This also fixes #845.
Merge pull request #846 from vitoshka/pprint2

[c9fcff3] set *print-right-margin* in REPL window
Recommend the use of lein 2.5+ for cider-jack-in
Track upstream changes to the apropos middleware