Update privacy and TOS links for edge.
Update privacy and TOS links for edge.

Currently,edge environment is serving empty pages against privacy
and TOS.Now, this behaviour is modified by pointing those links to
edX's privacy and TOS pages.

PROD-1066

eduNEXT/edunext-platform,mitocw/edx-platform,arbrandes/edx-platform,eduNEXT/edx-platform,EDUlib/edx-platform,edx-solutions/edx-platform,arbrandes/edx-platform,mitocw/edx-platform,appsembler/edx-platform,eduNEXT/edx-platform,eduNEXT/edunext-platform,edx/edx-platform,arbrandes/edx-platform,msegado/edx-platform,cpennington/edx-platform,stvstnfrd/edx-platform,appsembler/edx-platform,cpennington/edx-platform,eduNEXT/edx-platform,EDUlib/edx-platform,eduNEXT/edx-platform,msegado/edx-platform,edx-solutions/edx-platform,stvstnfrd/edx-platform,cpennington/edx-platform,angelapper/edx-platform,mitocw/edx-platform,EDUlib/edx-platform,angelapper/edx-platform,msegado/edx-platform,appsembler/edx-platform,angelapper/edx-platform,angelapper/edx-platform,edx/edx-platform,edx/edx-platform,EDUlib/edx-platform,edx-solutions/edx-platform,stvstnfrd/edx-platform,msegado/edx-platform,eduNEXT/edunext-platform,eduNEXT/edunext-platform,arbrandes/edx-platform,mitocw/edx-platform,appsembler/edx-platform,msegado/edx-platform,stvstnfrd/edx-platform,edx-solutions/edx-platform,cpennington/edx-platform,edx/edx-platform