5194 remove diesel dls alias

[GeronimoJohn]

Fixes #5194

👩🏻‍💻 What does this PR do?

This removes redundant aliasing of Diesel DSLs. According to Diesel's documentation, the dsl alias is only useful when dealing with a single table. We should use DSL for convenience if we are working with just one table in a module, but for the rest, we don't need to alias them.

💌 Any notes for the reviewer?

This is quite the hefty review. In order to make things easier, I've pushed the changes in batches. I was considering different PRs, but I didn't want our project to be filled with them.

See the link below for each commit. Hope it helps 😃

1. Initial Batch
2. 2nd Batch
3. 3rd Batch
4. 4th Batch
5. Last Batch

🧪 Testing

📃 Documentation

• Part of an epic: documentation will be completed for the feature as a whole
• No documentation required: no user facing changes or a bug fix which isn't a change in behaviour
• These areas should be updated or checked:
  1.
  6.

[roxy-dao]

Nice! Massive effort ~ Just a nitpicky comment, but I would have alias some of it to have the same name as the _dsl without the _dsl XD If that makes sense...

Just did a quick search and it seems there are still 551 more results for _dsl.

Could you keep the issue opened and do this in another PR since this one is already massive~?