select the initial hint on backspace key press
clear hints when nothing's left
fix the bug that prevents Ctrl+Space from invoking css hints
fix hinting for '../'; add site-root support; fix filtering
fix entity insertion with 2 entities on same line
Merge branch 'master' into css-code-hints-improvements

Conflicts:
	src/extensions/default/CSSCodeHints/main.js

"Select the initial hint on backspace key press" has been done by @redmunds on master, fixed conflicts
reapply 'select the initial hint on backspace key press'
Minor translations

Strings.js missing a few words bothered me.
Merge pull request #6242 from YuAo/css-code-hints-improvements

CSS code hints improvements
add extensions/dev and extensions/samples to grunt build
Merge pull request #6277 from adobe/randy/issue-6249

Fix entity insertion with 2 entities on same line
remove obsolete TODO comment
Merge pull request #6271 from adobe/randy/issue-6239

Url Hinting bug fixes
Merge pull request #6294 from adobe/jasonsanjose/issue-6256

Add extensions/dev and extensions/samples to grunt build
Merge pull request #6292 from Soleedus/patch-1

Minor Italian translation fixes (Trivial)