Revert "update fragment_calendar.xml to show list of events"

This reverts commit dae4d16ffa357661e95327f72a9555a561e77f02.
Revert "Update string.xml with array values"

This reverts commit 9ea098e35c32b06a4a6d6bf6d7a2312feaad11fc.
Revert "Create activity_recommended_friends.xml"

This reverts commit 55c7896e56e7f211807fbab8e13e9227b6490789.