Introducing static Properties-Object for storing user settings and other persistent data.
Static access via Main.saveProp() / Main.getProp() from everywhere.
More properties following.

DatabaseSetup is now accessing the Prop-Object properly to store input from the dialog.
(Finally *sigh*) Finished first version of the DbWrapper.java which allows simplified access to the database by creating and holding a connection to any oracle database, sending queries and processing results, so that tables can be created from the resulting matrix and column names (using DbWrapper.getResultOfQuery(String query) and DbWrapper.columnNames()).
Processed result are stored within the ResultContainer, held by the DbWrapper itself. ResultContainer is fully accessible, in case you need specific data beside the matrix, like the ResultSetMetaData e.g.

Testings pending. NO GUARANTEE for correct behaviour atm.
metadata update
character set update. not important.
Merge branch 'master' of https://github.com/Isaisaisa/DB-Merlin

Conflicts:
	.metadata/.log
	.metadata/.plugins/org.eclipse.core.resources/.safetable/org.eclipse.core.resources
	.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.ui.prefs
	.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.ide.prefs
	.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi
	.metadata/.plugins/org.eclipse.jdt.core/externalLibsTimeStamps
	.metadata/.plugins/org.eclipse.jdt.core/savedIndexNames.txt
	.metadata/.plugins/org.eclipse.jdt.ui/QualifiedTypeNameHistory.xml
	.metadata/.plugins/org.eclipse.jdt.ui/dialog_settings.xml
	Aufgabe_3/.classpath
	Aufgabe_3/src/GUI/Login.java