Fix issue where the client crashes when goto app action is selected

This commit supplies the missing prop 'apps' to Table component
and EventSelector component so that they can properly display the
apps.

This commit also modifies the get-all-apps query logic such that
if the queried page is 0, it fetches all the apps.

It adds a filtering logic such that presently only the apps with
slugs are listed as targets for goto app action.

frontend/src/Editor/Inspector/Components/Table.jsx

@@ -230,6 +230,7 @@ class Table extends React.Component {
             eventOptionUpdated={this.actionButtonEventOptionUpdated}
             currentState={this.state.currentState}
             extraData={{ actionButton: action, index: index }} // This data is returned in the callbacks
+            apps={this.props.apps}
           />
           <button className="btn btn-sm btn-outline-danger col" onClick={() => this.removeAction(index)}>
             Remove

frontend/src/Editor/Inspector/EventSelector.jsx

@@ -51,7 +51,7 @@ export const EventSelector = ({
 
   function getAllApps() {
     let appsOptionsList = [];
-    apps.map((item) => {
+    apps.filter(item => item.slug != undefined).map((item) => {
       appsOptionsList.push({
         name: item.name,
         value: item.slug

frontend/src/Editor/Inspector/Inspector.jsx

@@ -191,6 +191,7 @@ export const Inspector = ({
           components={components}
           currentState={currentState}
           darkMode={darkMode}
+          apps={apps}
         />
       }
 

frontend/src/_services/app.service.js

@@ -16,7 +16,10 @@ export const appService = {
 
 function getAll(page, folder) {
   const requestOptions = { method: 'GET', headers: authHeader() };
-  return fetch(`${config.apiUrl}/apps?page=${page}&folder=${folder || ''}`, requestOptions).then(handleResponse);
+  if (page === 0)
+    return fetch(`${config.apiUrl}/apps`, requestOptions).then(handleResponse);
+  else
+    return fetch(`${config.apiUrl}/apps?page=${page}&folder=${folder || ''}`, requestOptions).then(handleResponse);
 }
 
 function createApp() {