Basic work on localization

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

...va/de/hhu/ba/yoshikoWrapper/core/LocalizationManager.java

...ain/java/de/hhu/ba/yoshikoWrapper/core/NetworkParser.java

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

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

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

...n/java/de/hhu/ba/yoshikoWrapper/gui/LanguageSwitcher.java

...ain/java/de/hhu/ba/yoshikoWrapper/gui/LibStatusPanel.java

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

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

...ain/java/de/hhu/ba/yoshikoWrapper/gui/SolutionsPanel.java

src/main/resources/YoshikoStrings.properties

src/main/resources/YoshikoStrings_de_DE.properties