Don't show apps which are pending installation in web admin

src/freedombone-utils-webadmin

@@ -124,6 +124,7 @@ function web_admin_create_add_apps {
     local_hostname=$(grep 'host-name' /etc/avahi/avahi-daemon.conf | awk -F '=' '{print $2}').local
     apps_add_template_filename="/var/www/${local_hostname}/htdocs/admin/apps_add_template.html"
     appslist_add_filename="/var/www/${local_hostname}/htdocs/admin/apps_add.html"
+    pending_installs="/var/www/${local_hostname}/htdocs/admin/pending_installs.txt"
     icons_dir="/var/www/${local_hostname}/htdocs/admin/icons"
     app_add_template_filename="/var/www/${local_hostname}/htdocs/admin/app_add_template.html"
     FILES="/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-*"
@@ -159,6 +160,13 @@ function web_admin_create_add_apps {
             app_index=$((app_index+1))
         done
 
+        # check if the app is pending installation
+        if [ -f "$pending_installs" ]; then
+            if grep -q "install_${app_name}" "$pending_installs"; then
+                app_is_installed=1
+            fi
+        fi
+
         if [ ! $app_is_installed ]; then
             app_filename="/usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-${app_name}"
             if [ -f "$app_filename" ]; then