Add form.js

Closes devops#468 (closed) devops#457 (closed)

Adding features:

• Enable GPU selection if choose GPU partition
• Set max GPU base on partition
• Set max CPU base on partition
• Set max hour base on partition

form.js

@@ -31,6 +31,7 @@ function toggle_gpu_visibility(event) {
   const gpu_selector = '#batch_connect_session_context_bc_num_gpus';
 
   toggle_visibilty_of_form_group(gpu_selector, table[partition]["max_gpu"] != -1);
+  set_max_value(gpu_selector, table[partition]["max_gpu"]);
 }
 
 function toggle_visibilty_of_form_group(form_id, show) {