Typically, a view can specify its templateName and then use the default
render method on Whisper.View, except in some special cases like message
view or message detail where other operations are performed during
render.
// FREEBIE
Define a Whisper.View base class that automatically parses and renders
templates and attributes defined by the subclass. This saves us a good
number of lines of code as well as some marginal memory overhead, since
we are no longer saving per-instance copies of template strings.
