This provides us with a blank canvas for styling Minerva's history
page in AMC mode.
I have also provided styles for a non-AMC mode (test by changing
the class on body tag to minerva--amc-disabled). This will allow us
to remove the SpecialMobileHistory page in mobile if we choose to
do so.
Change-Id: Ic57cb79903e90ce1bbfa6d87ab0499f09373e732
