Turn the alpha down on the "highlighted line" background color so
it's not so eye-searingly-unreadable in "dark" themes.
Improve documentNotUTF8 check in ToolsError for HTML support
Merge pull request #1 from tml/master

Turn the alpha down on the "highlighted line" background color

* tml/master:
  Turn the alpha down on the "highlighted line" background color so it's not so eye-searingly-unreadable in "dark" themes.
Merge pull request #2 from DaveRandom/documentNotUTF8-improvements

Improve documentNotUTF8 check in ToolsError for HTML support

* DaveRandom/documentNotUTF8-improvements:
  Improve documentNotUTF8 check in ToolsError for HTML support