move pagination state entirely to URL params

don't duplicate it state variables

jsx/src/Store.js

@@ -1,55 +1,20 @@
 export const initialState = {
   user_data: undefined,
-  user_page: { offset: 0, limit: window.api_page_limit || 100 },
-  name_filter: "",
+  user_page: undefined,
   groups_data: undefined,
-  groups_page: { offset: 0, limit: window.api_page_limit || 100 },
+  groups_page: undefined,
   limit: window.api_page_limit || 100,
 };
 
 export const reducers = (state = initialState, action) => {
   switch (action.type) {
     // Updates the client user model data and stores the page
-    case "USER_OFFSET":
-      return Object.assign({}, state, {
-        user_page: Object.assign({}, state.user_page, {
-          offset: action.value.offset,
-        }),
-      });
-
-    case "USER_LIMIT":
-      return Object.assign({}, state, {
-        user_page: Object.assign({}, state.user_page, {
-          limit: action.value.limit,
-        }),
-      });
-
-    case "USER_NAME_FILTER":
-      // set offset to 0 if name filter changed,
-      // otherwise leave it alone
-      const newOffset =
-        action.value.name_filter !== state.name_filter ? 0 : state.name_filter;
-      return Object.assign({}, state, {
-        user_page: Object.assign({}, state.user_page, {
-          offset: newOffset,
-        }),
-        name_filter: action.value.name_filter,
-      });
-
     case "USER_PAGE":
       return Object.assign({}, state, {
         user_page: action.value.page,
         user_data: action.value.data,
       });
 
-    // Updates the client group user model data and stores the page
-    case "GROUPS_OFFSET":
-      return Object.assign({}, state, {
-        groups_page: Object.assign({}, state.groups_page, {
-          offset: action.value.offset,
-        }),
-      });
-
     case "GROUPS_PAGE":
       return Object.assign({}, state, {
         groups_page: action.value.page,