removes sections from MainActivity.java, added view_player_resource.xml to group layer input UI elements
resized icons to 72x72, removed mockito from class path
added dark background_dark.png, created PlayerResourceView to separate player input UI and logic components
added IPlayerResourceView as a contract for view element in player resources UI component
added enum ResourceType with all types of resources available in game
implemented IPlayerResourceView methods in view class
implemented PlayerResourceView constructor
added PlayerResource containing properties of single resource and acting as a model in player resources compound view
added presenter for player resource compound view, refactored PlayerResourceView to simplify setting up resource type