opt in to notifications when flagging an issue

[M-Nicholls]

add a check box to the flag an issue dialogue to opt in to notifications on changes on annotated records

[] notify me when records I have annotated are updated

will be checked if the user has activated the annotations alerts in their profile
if the user unchecks the box here then it will disable the annotations alerts in their profile - pop - up warning, "This will disabled the alerts for all your annotated records. Do you wish to continue?" Y/N
if the user checks the box it activates all the annotations alerts in their profile as per #182

there is a log in check when pressing flag an issue so they should already be logged in