Hygiene: Eliminate api fixmes from PageApi

* revise lastmodified property returned by api
** mobile view api now returns last modified by username and gender
* PageApi -> use data returned from mobileview api, removed fixmes
* revise qunit tests to reflect changes

Change-Id: Ie02e7bf37ebcf750b472064379caab97f95a38db
Merge "Hygiene: Eliminate api fixmes from PageApi"