doc issues: error's documentation enhancement and merge with FAQ

[bearecinos]

Dealing with errors. This post is great, but I think it does not deal with errors when you are writing your own loop. Probably having a section on how to deal with AssertionError’s or where to find a list of glaciers that fail and how to remove them from your working directory will help (@bearecinos has some tutorial on that can share / push).

One thing that @ehultee noticed, is that this section is also not the same as the “Help, an error!” page that @anoukvlug promoted in #support .

Here is something @Suther11LBU suggested to avoid the confusion.

• We need to define what we mean by 'error' here as having two pages with a similar name is confusing. @anoukvlug recent "Help, an error!" page is more about how/where users should direct their questions if they're struggling. Both pages could be merged or we just change the title of one?

• Yet other errors are discussed on the FAQ page. @ehultee suggest this information be removed from FAQ and moved to the “Dealing with errors” tutorial notebook with examples.

• FAQ on docs website is not aligned with resources elsewhere. See above note about specific errors on the FAQ page. Immediately below there is a response about using one’s own input data, and the “have a look at this tutorial!” link goes to 404.