Tweak jshint config a bit

* Don't complain about line breaks in typical conditional formatting.

We prefer

someLongCondition
&& anotherLongCondition
&& anotherLongCondition
&& anotherLongCondition

over

someLongCondition &&
anotherLongCondition &&
anotherLongCondition &&
anotherLongCondition

JSHint still complains about real issues like
return
  "foo"

which is parsed as return; "foo"; The JSHint error message here 
is 'Missing semicolon.'.

Change-Id: Ib910e5dd414c798a06327d32ce9a58c6ea46855b