Add parameter sweep to learning rate and batch size

[jmancewicz]

Adding the ability to sweep Batch Size and Learning Rate. Their entry fields now accept multiple values.

Each permutation of the swept fields will generate one job. With Batch Size [1,2] and Learning Rate [0.01, 0.015, 0.02], six jobs will be created. The job names are augmented by the swept field value. When multiple jobs are launched, the page is redirected to the home page rather than a job page.

If you were to clone one of these jobs, it will only have the values of that particular job. The clone data is saved per job.

[lukeyeager]

Looks great, thanks for the screenshots!

At first glance, the code works great and looks to be written well - no complaints!

Let's add a simple test so we don't break it in the future and I think we're good to go. @gheinrich do you want to take a look too?

[jmancewicz]

Added tests

[lukeyeager]

Tests look good (despite the fact that TravisCI can't complete before the time limit 😠).

Thanks for the great work!