Catch CTRL+c in new_system_setup.py

Fixes issue #50

.bin/Scripts/new_system_setup.py

@@ -87,9 +87,13 @@ if __name__ == '__main__':
       function=install_ninite_bundle, cs='Started',
       mse=answer_mse, libreoffice=answer_libreoffice,
       other_results=other_results)
-    for proc in result['Out']:
-      # Wait for all processes to finish
-      proc.wait()
+    try:
+      for proc in result['Out']:
+        # Wait for all processes to finish
+        print_standard('Waiting for installations to finish...')
+        proc.wait()
+    except KeyboardInterrupt:
+      pass
 
     # Scan for supported browsers
     print_info('Scanning for browsers')
@@ -108,7 +112,14 @@ if __name__ == '__main__':
 
     # Configure software
     print_info('Configuring programs')
-    install_adblock()
+    print_standard('    (if stuck press CTRL+c to cancel this step).')
+    try:
+      install_adblock()
+    except KeyboardInterrupt:
+      print_warning('Configuration interrupted.')
+      print_standard('Please confirm all browsers have adblock installed.')
+      if not ask('Continue to next step?'):
+        abort()
     if global_vars['OS']['Version'] == '10':
       try_and_print(message='ClassicStart...',
         function=config_classicstart, cs='Done')