Thesis: Add Survey dialog

[FelberMartin]

Problem Description

As part of my masters thesis, I want to conduct a survey of the Artemis Android app users. To make the users aware of that survey, I will display a small hint in the course overview for the duration of the survey (approx. 2 weeks). The survey will be hosted by the chair owned domain https://survey.ase.in.tum.de/.

Here are the preliminary questions: https://confluence.ase.in.tum.de/spaces/ArTEMiS/pages/232761693/Artemis+Android+Questionnaire

Changes

• Added survey hint in the CourseOverview
• Added survey dialog
• Restructured CourseOverview code
  • extracted BetaHintDialog
  • extracted CourseList

Steps for testing

• Go to the course overview page
• Notice the survey hint
• Click on it
• Press "Not now" -> dialog closes
• Click on it again
• Press "Participate" -> for now this only takes you too a example domain in the browser
• Navigate back to the app -> the hint is not shown anymore

Screenshots

Next steps

As soon as the survey questions and timeline is finalized

• Add appropriate start and end dates (the survey hint will only be displayed during that period) -> DONE
• Replace the sample with the real survey link -> DONE
• Merge the PR
• Create a new release

[julian-wls]

The changes work as expected, the link leads to the website. Only thing I noticed is that the text in the dialog. I think it would look better if it was centered, but I think it's the default for Android to have it on the left. You can try to change it (see below), but it's not necessary, the beta hint dialog is not centered as well.