Improve api responses and cache destinations

[NLmeng]

• limit left is always fetched from server instead of relying on redux, and the alert doesnt spam when u spam open the modals
• new limit for the Extra Notes and Speak Your Mind. one per day since they are the features that cannot be used with cache rn
• new model called Destination which uses Mongo 2dsphere index to cache stages
• when creating new trips (without Extra Notes and Speak Your Mind), it will try to fill in 80% with cache, whatever is left will be generated. however the new generation response is shorter (it just generates a list of stages and then it is built into the usual format)
• generateTrip response is shorten, then it is built to the usual form.
• googleCoordinates retry once because most of the errors come from when the stageLocationName has city in it. eg. 'Stanley Park, Vancouver'
• script to turn current stages in db to destinations

[L0Lmaker]

NIT for next time: might be easier to review if changes are in separate PRs. Sometimes it can't be split if the changes are coupled so it should be okay in those cases.