Some refactoring // cleanup

src/main/java/de/hhu/ba/yoshikoWrapper/CyActivator.java

...in/java/de/hhu/ba/yoshikoWrapper/core/GraphicsLoader.java

...java/de/hhu/ba/yoshikoWrapper/core/NetChangeListener.java

src/main/java/de/hhu/ba/yoshikoWrapper/gui/ColumnMapper.java

...main/java/de/hhu/ba/yoshikoWrapper/gui/EditCostPanel.java

...hhu/ba/yoshikoWrapper/gui/EnableWhenSelectedListener.java

src/main/java/de/hhu/ba/yoshikoWrapper/gui/MainPanel.java

...java/de/hhu/ba/yoshikoWrapper/gui/OperationModePanel.java

...a/de/hhu/ba/yoshikoWrapper/gui/SolutionNumberChooser.java

...in/java/de/hhu/ba/yoshikoWrapper/gui/TimeLimitSetter.java

...main/java/de/hhu/ba/yoshikoWrapper/gui/YoshikoHeader.java

src/main/resources/YoshikoStrings.properties

src/main/resources/graphics/YoshikoAlphaLogo.png

src/main/resources/graphics/YoshikoAlphaText.png

src/main/resources/graphics/package-info.java