158 paginated data list (#180)

* working: rename OrganizationTeamsList to PaginatedDataList

* convert org notifications list fully to PaginatedDataList

* update NotificationList tests

* refactor org access to use PaginatedDataList

* update tests for org access refactor; fix pagination & sorting

* restore Add Role functionality to Org roles

* fix displayed text when list of items is empty

* preserve query params when navigating through pagination

* fix bugs after RBAC rebase

* fix lint errors, fix add org access button

src/util/qs.js

@@ -11,6 +11,7 @@ export const encodeQueryString = (params) => {
 
   return Object.keys(params)
     .sort()
+    .filter(key => params[key] !== null)
     .map(key => ([key, params[key]]))
     .map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`)
     .join('&');
@@ -27,7 +28,7 @@ export const encodeQueryString = (params) => {
 export const parseQueryString = (queryString, integerFields = ['page', 'page_size']) => {
   if (!queryString) return {};
 
-  const keyValuePairs = queryString.split('&')
+  const keyValuePairs = queryString.replace(/^\?/, '').split('&')
     .map(s => s.split('='))
     .map(([key, value]) => {
       if (integerFields.includes(key)) {

src/util/strings.js

@@ -0,0 +1,16 @@
+
+export function pluralize (str) {
+  return str[str.length - 1] === 's' ? `${str}es` : `${str}s`;
+}
+
+export function getArticle (str) {
+  const first = str[0];
+  if (('aeiou').includes(first)) {
+    return 'an';
+  }
+  return 'a';
+}
+
+export function ucFirst (str) {
+  return `${str[0].toUpperCase()}${str.substr(1)}`;
+}