userdashboard view changes

query changed for getting groups 
previosuly was fetching all the group
now -- only showing the groups related to user i.e subscribed to or created by him

increased limit of all the section i.e Groups activities and Task in user dashboard from displaying only 4 cards to 10 cards

Task bug:-
when a task is deleted after deletion only tasks are listed in list format with white background basically static listing was happening .
corrected that bug