Merge pull request #25 from Bergsocke/developer

Developer
Merge pull request #26 from Bergsocke/developer

Layout-Spielereien
Merge pull request #27 from Bergsocke/developer

Password-Hash MD5 implementiert
Merge pull request #28 from Bergsocke/developer

Menübar hinzugefügt
Merge pull request #29 from Bergsocke/developer

MenüBar hinzugefügt
Merge pull request #30 from Bergsocke/developer

Source-Code lesbarer gestaltet
Merge pull request #32 from Bergsocke/developer

Source-Code lesbarer gestaltet
Merge pull request #39 from Bergsocke/developer

Use Case Diagram
book_db.sql