Dashboard improvements, fixes and consistency

[creeperkatze]

While working with the dashboard I noticed some minor consistency problems, as well as small ui problems.

This PR addresses them, specifically by:

• making the organizations page title and paragraph consistent (with the projects page for example)
• fixing the bottom spacing on the notifications page
• implementing the tiled layout for the revenue and transactions pages
• adding the main "Dashboard" title above the navstack
• improving the analytics page loading animation and making the left margin of the chartdisplay consistent
• fixing the navstack so it wont touch the footer

To make sure these changes don't cause problems, I used mock data to test different scenarios and also tested different themes.

I implemented these changes in separate commits, so I can always exclude any of them.
I'm also open to any feedback / changes! :)

[creeperkatze]

Before.mp4

After.mp4

[IMB11]

Hi, we probably won't accept this with the changes to the revenue page. The revenue page reflects the design aim for the other pages, it was designed to not have cards to contain the content.

The consistency changes on the other pages are fine though, we do plan to refactor them in the future

[creeperkatze]

@IMB11 I totally get that, I have reverted the commit that implemented the cards for the revenue page.