[BUGFIX] Fix case of class name used in PageSelector
[TASK] Use FlexForm Service from Flux to getStoredVariable
[FEATURE] Pass extension name when building Flux page data

This utilises newly added methods to pass along the name of the extension containing the Flux form, enabling it to be read from the ControllerContext and thus, allow things like `f:translate` to work as if it were native to the extension using the Flux form.
Merge pull request #27 from NamelessCoder/extensionname

[FEATURE] Pass extension name when building Flux page data