Merge branch 'latex_doc_felix'
GUI description finished. Standard Username in CreateAccountWindow.
Merge branch 'LaTeX_documentation_holzi'
Merge branch 'latex_doc_felix'
Merge branch 'master' into LaTeX_documentation_holzi
Kryptosystem.
Generated UML's.
Merge branch 'UML'
Erweiterung der Funktionalität.
Providing Server.
Added CreateAccount to UseCase.
Merge branch 'LaTeX_documentation_holzi'

Conflicts:
	doc/LaTeX/IS_Projekt.tex
Resolved merge conflict.
Fixed Insstallationsaleitung section.
Edited Brainstorming.txt
Merge branch 'master' into latex_doc_felix