Minor We are looking for a way to extend functionality for using PerPage,
SortBy and Page params from URL Query. Here is a quick outline of
things to do:
New Query Params Usage:
1. Tag PageLink will include parameters "page,per_page,sort_by" from
request, when available (only pass them, when differ, from default
values from unit config of that prefix)
2. Pass main_list="1" to InitList/PrintList of main list on the page
(one list per page)
3. When main_list parameter is given, then during list initialization
use page,per_page,sort_by from url to initialize list
4. Remove "action" attribute from <form> tags on front-end
5. Events OnSetPage, OnSetPerPage, OnSetSorting* should not add
associated with them url parameter (page,per_page,sort_by), when it's
value is equals to default value from unit config of main list being
used.
New Query Params Storage:
1. don't store page,page,sorting in session on Front-End (setting in
debug.php)
2. store page,page,sorting in cookie (expiration until browser is
closed) in format "<prefix>_var", e.g. "product_page".
