gui changes
Merge branch 'master' of https://github.com/spixi/Dijkstra.git
changed gui / deleted obsolete stuff
Merge branch 'master' of https://github.com/spixi/Dijkstra.git

Conflicts:
	src/gui/Mainwindow.java
Merge branch 'master' of https://github.com/spixi/Dijkstra.git

Conflicts:
	src/gui/Mainwindow.java
extended view features so the suit the requirements