Don't dismiss code hints on key up events except for Home and End keys.
Initial support for Slovak language

I have translated 1/4 of all strings. The following strings I will add
later.
update for Live HTML
Re-translated French Getting Started HTML file.
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Edit Svedsky
Slovak preklad 2/4
Slovak language support
Fixed an out-of-scope variable error

Silly me.
style cleanup for navigation buttons
squashed from larz/linux-scrollbar
Updated based on Jason's feedback.
Removed test selector.
Added @TomMalbran's new less file that consolidates all scrollbar styles.
Removed quiet scrollbar styles as they're all in brackets_scrollbars.less now.
Updated link.
Cleaned up a bit.
Removed linux scrollbar style.
Updated by ALF automation.
Fixed based on @TomMalbran's feedback.