feat: dashboard view mode design changes

[cooper-joe]

Implements UX-173

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Key features

1. Adjusts design of the TitleBar component to remain visible while scrolling a dashboard.
2. Adjusts design of TitleBar components to reduce visual noise.

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Description

This PR implements changes to the Dashboard view mode to make it easier to understand which dashboard is currently selected. Visual design changes also reduce visual noise.
(This PR supersedes #2210, which had become stale and had an unfixable-to-me bug with the progressive loading.)

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TODO

• Re-implement the starring functionality after moving the StarDashboard button to a different component.
• Possibly tweak the magic numbers used for control bar rows. This was very difficult to get right, so I think it may be off somehow.

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Screenshots

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[dhis2-bot]

🚀 Deployed on https://pr-3095.dashboard.netlify.dhis2.org

[jenniferarnesen]

@cooper-joe I fixed a bunch of merge conflicts that came up after merging Mozafar's rtl PR. You might want to do a check of the affected css files:

Content.module.css
DashboardsBar.module.css
DragHandle.module.css
ShowMoreButton.module.css
DashboardContainer.module.css
FilterBadge.module.css
FilterBar.module.css
ActionsBar.module.css
Description.module.css
LastUpdatedTag.module.css
StarDashboardButton.module.css
TitleBar.module.css

[jenniferarnesen]

There is a new design coming in PR #3156 that renders this PR obsolete.