install page layout isn't great

[eristhea]

issues:

• warning box is a different size than the buttons (visually inconsistent)
• launchers should be limited to a certain number of elements horizontally (I would choose 4 launchers per row)
• not very pretty (could use some sort of background decoration)
  

[eristhea]

also: maybe we should rename the "client" button to "official launcher"
I think that would be much clearer for most users

[Southpaw1496]

Are the changes we made in f027c5c good enough to close this issue?