revise Ansaetze and Vergleich der Ansaetze views

[omerhod]

Bounty

• unify the Ansaetze and Vergleich views into one view
• have a dropdown menu for the Vergleich and the different approaches

Scope

• 3-5hr

Deliverables

• code change

Gain for the project

• better UIUX

Roles

bounty worker: @username bounty reviewer: @username

Issue creation checklist

• [x] I have attached one of the team labels Fragebogen, Technik, Projektwebseite, Vergleich, Organisation to this bounty
• [x] I have attached one of the priority labels Blocker, High, Medium, Low to this bounty
• [x] I have attached one of the size- labels to this bounty
• [x] I have added this bounty to bounty board here https://github.com/FUB-HCC/20-SWP-CodingOpenness/projects/1