.. and make travis run it.
I renamed check-license-headers.sh to check-style.sh and expanded it so
that it now also checks for the presence of "#pragma once" in .h files.
It also checks the presence of a (single) blank line above and below the
"#pragma once" line.
I also added "#pragma once" to all the files that need it: even the ones
we are not check.
I also added/removed blank lines in order to make the script not fail.
I also ran clang-format on the files I modified.
This patch uses the new JS::MarkupGenerator to stylize all of the
source code and runtime values printed in the console's output panel.
This also does away with the Console's global style sheet, as all
styling is handled by the MarkupGenerator and the System Palette.
The new JS::MarkupGenerator class can convert both a JS source string
and a JS Runtime Value into properly formatted HTML using the new
LibWeb System Palette css color values.
It makes more sense for this JS -> HTML process to occur in LibJS
so that it can be used elsewhere, namely Markdown code block syntax
highlighting. It also means the Browser can worry less about LibJS
implementation details.
