Fix parsing URLs with no parameters.  Add isEmpty and remove methods.
select the initial hint on backspace key press
clear hints when nothing's left
Add UrlParams unit tests
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)
Fix parsing edge cases and added edge case tests
Fix _store initialization in public method parse()
Merge pull request #6246 from lkcampbell/fix-6008

Fix UrlParams parsing when URL has no parameters.  Add remove() and isEmpty() methods.