PWA menu options and UX

[keithbentrup]

Current experience

• User goes to /settings, realizes needs url, looks up and goes fetch url, copy & pastes url, submits

Possible improvements

• have sample options in MDM menu OR pwa settings
• choose your own backend: provide list of envs to choose from (could be quite long - show top 5 most recently created or updated? (select environments from all of user projects, sort by updated, grab top 5 mc environments -p a6terwtbk67os --columns id,created,updated --format=csv | sort -k 3 -t ,)