Allow removing/skipping fishing spot when adding a catch

[cohenadair]

If a user selects a photo with location data attached, that data is used for the catch; however, the data can't be removed, only changed. This is problematic if a user takes a photo somewhere where the catch wasn't made (at home, for example). In this case, a fishing spot is created at the user's home and automatically used when adding new catches.

What should be allowed:

• Skipping fishing spot in catch journey
• Selecting "None" or "Clear" for fishing spot on the save catch page (use same text/behaviour as other pickers)