Creating sample with same name from within tube view fails without feedback

[fanis]

Using v 1.7.10

Recreate:

• assume a sample job exists with name = SAMPLE1 on tube = TUBE1
• navigate to /?action=manageSamples and then to /?action=newSample
• attempt to add new sample job with same name = SAMPLE1
• get expected response " You already have a job with this name "
• now go to tube = TUBE1 view and wait for a Ready job (pause tube or worker)
• click on Add to samples button above job, enter same name SAMPLE1 and hit Save
• no feedback or action is taken
• viewing the browser developer console, I see an XHR POST to /?action=addSample that leads to a response of Object { result: false, error: "You already have a job with this name" }, but it is not displayed in the UI anywhere.