RiskProject v0.95

Updated all files
- added @author

Updated DomainController.java
- changed getUsers method to return a java.util.List containing the
Users
- added method gameSquareSymbolStringArray

updated Game.java
- changed getUsers method  to return a java.util.List containing the
Users
- changed parameter of IllegalArgumentException with String
- changed parameter of IllegalGameSquareException with String
- changed parameter of InsufficientArmy
- updated exchangeCards to handle List of Strings
- added gameSquareSymbolStringArray

Updated Symbol.java
- now uses Strings as identifier for symbols

Updated GameSquareRepository.java
- added gameSquareSymbolStringArray method

Updated ExchangeGUI.java
- implemented JFrame
- added ImageIcons
- added button to confirm
- implemented ActionListener
- implemented Try-Catch blocks

Updated GameGUI.java
- deleted unused imports
- enhanced readability of fields
- added field currentUser
- added calculation to calculate currentUser
- added drawSymbols
- added refreshAttDefPanels to re-init Att- and Def-panels
- updated MouseListener to cleaner code
- updated actionPerformed
- added JOptionPane to notice user he has conquered a country
- implemented call exchangeGUI
- implemented Try-Catch blocks

Updated Resource bundles
- added select to each .properties file
- added confirm to each .properties file
- added IllegalGameSquareException to each .properties file
- added InsufficientArmy to each .properties file
- added noCorrectCombinationException to each .properties file

Added new images
- added aod.png
- added bass.png
- added defqon.png
- added hazardous.png
- added qlimax.png
- added yinyang.png

NewJFrame.Java deprecated?