Fixes icons.
Fixes form dispose.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/gr/teicm/mp/thefmanager/gui/MainForm.java
	src/main/java/gr/teicm/mp/thefmanager/gui/MainForm.jfd
	src/main/resources/images/actions/Actions-go-next-icon.png
	src/main/resources/images/actions/Actions-go-previous-icon.png
	src/main/resources/images/actions/Actions-go-up-icon.png
	src/main/resources/images/actions/Refresh-icon.png