User stories 45 & 46 - Merchant enables/disables an item

[chakeresa]

Closes User Story 45 (#45) & 46 (#38) - Merchant enables/disables an item

• Feature tests(%) - 98%: skipping 4 edge case tests right now because I can't figure out how to test them using Capybara! Might have to ask the instructors, or make the code in my controller actions dumber...
• Model tests(%) - 100%
• Commented Hard to Understand Areas? N/A

[smainar]

I made all of the edits, as suggested.

[smainar]

Note:
If a link or button initiates a request that takes a long time to respond then the user (being a user) might click the link or button again. Depending on the code implemented on the server this could put the application into a bad state.

Rails has a handy feature that will disable a link or button after the user has clicked it, "disable_with:". In Rails 5.0 and up submit buttons have disable_with set by default.