For this extraction, we need to move some context
parameter (from home_real in `views/home.py`) to extra
page_params parameter (of
build_page_params_for_home_page_load in
`lib/home.py`) so handlebars template can access them.
While moving I confirmed that these parameters are not
used elsewhere if some parameter is used elsewhere
(like `apps_page_url`) then I didn't remove it from the
context list, I just added it to the page_params list.
Fixes: #18795.
Riken Shah