Show Size Warning and Error Message When Full

[ademidun]

• Sync: https://developer.chrome.com/docs/extensions/reference/storage/#property-sync

• Local: https://developer.chrome.com/docs/extensions/reference/storage/#property-local

• Similar to Google Drive there should be a warning message that is displayed to the user when they have used more than 70% of the saved scholarships.

• If a user tries to add a scholarship or make any changes (adding notes, editing general notes) and the memory quota has been exceeded there should be an error message

• To see a discussion of potentially getting more storage if we switch from Sync to Local and the tradeoffs see: Consider switching Chrome Storage from Sync to Local #20