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

@@ -28,9 +28,11 @@ function set_partition_change_handler() {
 
 function toggle_gpu_visibility(event) {
   const partition = event.target.value;
+  const cpu_selector = '#batch_connect_session_context_bc_num_slots';
   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(cpu_selector, table[partition]["max_cpu"]);
   set_max_value(gpu_selector, table[partition]["max_gpu"]);
 }