Fixed #317 - replace mysql

pom.xml

@@ -85,11 +85,6 @@
             <artifactId>spring-boot-starter-data-jpa</artifactId>
         </dependency>
 
-        <dependency>
-            <groupId>mysql</groupId>
-            <artifactId>mysql-connector-java</artifactId>
-        </dependency>
-
         <dependency>
             <groupId>joda-time</groupId>
             <artifactId>joda-time</artifactId>
@@ -117,6 +112,11 @@
             <artifactId>libUtils</artifactId>
             <version>1.7.4</version>
         </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/de/deadlocker8/budgetmaster/utils/DatabaseConfiguration.java

+package de.deadlocker8.budgetmaster.utils;
+
+import de.tobias.utils.util.Localization;
+import de.tobias.utils.util.SystemUtils;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import javax.sql.DataSource;
+import java.nio.file.Path;
+
+@Configuration
+public class DatabaseConfiguration
+{
+	@Bean
+	@Primary
+	public DataSource dataSource()
+	{
+		Path applicationSupportFolder = SystemUtils.getApplicationSupportDirectoryPath(Localization.getString("folder"));
+		String jdbcString = "jdbc:h2:/" + applicationSupportFolder.toString() + "/" + "budgetmaster;DB_CLOSE_ON_EXIT=TRUE";
+		return DataSourceBuilder.create().username("sa").password("").url(jdbcString).driverClassName("org.h2.Driver").build();
+	}
+}