Improve padding of heading

[laurent22]

There are three different margins at the top at the moment - One for the Joplin logo, another for the Home button and another for the content margin. And that padding is different from the main page (the Home button jumps when changing from a plugin page to the home page).

I think we should do this:

• The Home link should be right below the "Joplin" logo
• And it shouldn't move when switching from a plugin page to the home page
• The "Install plugin" button should be right-aligned with the Search box
• The plugin preview image (currently on the left of the plugin title) should be removed. It should only be used on the home page
• And see below for the other changes:

Current

Changes

[personalizedrefrigerator]

This has been partially addressed — alignment should be improved, but the position of the icon still needs to be updated.

[laurent22]

@personalizedrefrigerator, also the icon size should be smaller like in the above mockup.

Currently it is too large:

[personalizedrefrigerator]

Updated UI:

[personalizedrefrigerator]

This has been implemented, though the relevant CSS is much more complicated than I would like it to be.