What I've done:

• Renamed CreateCluster to BootstrapCluster to better reflect its effect (it's not needed in the long run anyway)
• Made significantly shorter amount of time that aiohttp waits for pending connections to close while shutting down, from 1 minute to 5 seconds
• Fixed web exceptions reasons in the webserver
• Created a guard that would explicitly refuse to work if the ray is called with a different cluster name that is running on the webserver (ray submit et al fail on a different yaml than the cluster was created with #202)
• Added timeout for yagna status (yagna payment status subprocess sometimes never ends #209)
• Made nightly goth tests run both on the main and develop branches

Closes #209, #202