Removing Dismissible for better discoverability

[12people]

Description (Proposed Changes)

• Removing Dismissible on the nutrition and meal screens for better discoverability
• Different button layouts for nutrition and meal screens, to compensate for removing Dismissible
• New icon for toggling details
• Adjusted padding
• (Removing Dismissible on the weight and measurement screens is planned, but I'm having trouble adjusting tests to make deletion work.)

Checklist

Please check that the PR fulfills all requirements listed below by checking the relevant checkboxes ([x]). This will ensure a smooth and quick review process.

• Set a 100 character limit in your editor/IDE to avoid white space diffs in the PR
• Tests for the changes have been added (for bug fixes / features)
• Added yourself to AUTHORS.md
• Updated/added relevant documentation (doc comments with ///).
• Added relevant reviewers.