Resolve issues with case info storage

[holtgrewe]

Describe the bug
We currently have a couple of issues with the case info store.

Ensure the following
In a "virgin" browser window, i.e., without any session, we should not see any local javascript errors or JSON parsing. Seeing "not authorized" for profile etc. is OK.

• go to gene details and look at CADA ranking (should display nothing as HPO list is empty, should not try to prioritize)
• open case info window
• reload before saving user story:
  • open case info window
  • enter terms
  • reload before saving
• enter terms, save, reload, go to fresh page
• update terms while on gene info

Now, after logging in, do the same as above

• gene info with empty case
• enter terms
• go to gene info
• update terms while on gene info

Also, wrap the "load from local storage" code such, that on errors, the local storage key is erased. This should fix issues with old state in old snake_case_format.

• clear local storage key on error loading