In the unlikely event that no secret key is available, we shouldn't
rely on the cache at all in TemplateParser.
Adding new compileForEval() function and and moving eval() outside
of if statement to prevent code duplication.
Also, if the template fails integrity check, generate a notice
instead of throwing an exception in case we change the secret key.
Change-Id: Id44fdcc9533fc8a9c77e84fcebaa064f602477c6
The TemplateParser class provides a server-side interface to cachable
dynamically-compiled Mustache templates. It currently uses the
lightncandy library to do compilation (which is already included in
the vendor repo).
Also converting NoLocalSettings.php to use it as a proof-of-concept.
Bug: T379
Change-Id: I28cd13d4d1132bd386e2ae2f4f0d1dd88ad9162b
