changes to image loading on the left menu
activity model class added
tag class added
properties added to the activity class
getters and setters added
moved the methods down the file
properties added for the tag class to be used in the activites as a list of tags
getters and setters added for the tag class
renamed to meaning ful method names
tag class also renamed to meaning ful method names
query string param offset to be used in the retrofit request for activites
resident id to be used inside the rest url
retrofit interface call added for activities
adapter added to hold the list of activities
hold the activities in the activity adapter
turn the fragment into a list fragment