- Re-enable orphan warnings that were manually disabled in many modules
- Remove non-Haskell files that were just sitting in the source tree
- Remove modules that were not called from anywhere
- Remove unused dependencies

This is not exhaustive by any means. In particular, some more weeding out
can be achieved by looking at individual functions and even branches of
functions. Weeder can help with that.

It's better to enumerate fields than not - easier to search later.

Also, a performance improvement for queryNgramsOccurrences (no VALUES).

This contains only data, removes some Database dependency in imports.

This allows us to have only one single (static) map which will be
treated by GHC as a CAF.

This is a first stepping stone in avoiding bugs by having `UserId` and
`ContextId` being proper types, and not synonyms.

We also refactor things to have `AuthenticatedUser` carry the `UserId`.

Basically, Gargantext.Prelude exports all of Protolude now.

FlowCmdM -> DBCmd or HasNodeStory is usually enough

- DBCmd instead of Cmd
- remove FlowCmdM in favor of HasNodeStory

This doesn't block the whole view for the (long) period of refreshing
it.

This is safer than type Limit = Int

Based on the suggestions in
https://kodimensional.dev/space-leak