Added testSortCommentsByPic to MainListViewActivityTests
Removed unused variable headListView & non-used imports
Changed latitude and longitude in location model to fix location saving bug
Merge branch 'bradley'
EditComment now works with photos
Fixed location comparator to not lose differences in distance due to rounding from int cast
Fixed pesky warning on comparators; they now only work specifically for CommentModels
Fixed MainListViewActivityTests broken from enabling location
Implemented check for location in testDisplayCommentInList
Implemented check for location in testSortCommentsByDate
Implemented check for location in testSortCommentsByPic
fixed a sorting problem that caused location to always want to be the sorting criteria
Added javaDoc for EditCommentActivity
Merge branch 'master' of https://github.com/CMPUT301W14T10/Team-10-Project-W2014
Finished work on sorting head comment's subComments by pictures
Merge branch 'master' into steven