[BUGFIX] Fix calculation of path to Fluid template

In some cases the resolution to the (Fluid) template is not
correct. It looks the context object used by the View
is wrongly initialized. The changeset add method
setControllerExtensionName at the level of the Request
which solves the problem.
Merge pull request #330 from fudriot/develop-fix-wrong-path-calculation

[BUGFIX] Fix calculation of path to Fluid template