Added a check in the an gramadoir code to see if the user's computer has enough memory to import the TS Grammar checker
If the user does, they load in the TS grammar checker and proceed as normal (which seemed to be working ok for the majority of people)
If the user does not have enough memory, the grammar checker now works by making API calls to An Gramadoir that we are currently serving at gramadoir.abair.ie.
This PR contains additional small, unrelated improvements: no spell check with quill, better grammar tag error handling, etc.