Redash: Disable SQL auto-complete by default

[alison985]

We've had a request in the Mozilla fork to turn off auto-complete by default. https://github.com/mozilla/redash/issues/464

I'm opening this ticket to have any discussion needed about adding a configuration toggle for whether SQL auto-complete is on or off by default.

[arikfr]

How about we start with storing the state of autocomplete (enabled/disabled) in local storage? This way you won't have to disable it everytime you open a query editor.

If after that users will still feel like it's too much, we can look into adding a more global configuration.

Also, we should probably address the core issue here: improving the predictions autocomplete suggests.

[jezdez]

That seems like a good start indeed, thanks for the suggestion @arikfr!

[arikfr]

Implemented the toggle.