Merge pull request #386 from Witia1/master

Updated Polish translation
Clear list of installed/developed/purchased apps on logout (bug 969433)
Merge pull request #387 from diox/fix-apps-on-logout

Clear list of installed/developed/purchased apps on logout (bug 969433)
Commit from Mozilla Verbatim by user steekid.: 192 of 192 strings translated (0 fuzzy).
Make search / featured / categories endpoint calls anonymously (bug 975413)
New files added from Mozilla Verbatim based on templates
add comment
change usk age rating details link (bug 980058)
Commit from Mozilla Verbatim by user selim@selimsumlu.com.tr.: 192 of 192 strings translated (0 fuzzy).
Merge branch 'master' of github.com:mozilla/fireplace
Commit from Mozilla Verbatim by user selim@selimsumlu.com.tr.: 192 of 192 strings translated (0 fuzzy).
Merge pull request #384 from diox/anonymize-ALL-the-things

Make search / featured / categories endpoint calls anonymously (bug 975413)
Temporarily disable feature profiles (bug 979932, bug 980124)
Add features debug page (bug 980409)
Merge pull request #390 from diox/features-page

Add features debug page (bug 980409)
Merge pull request #389 from diox/everything-is-terrible

Temporarily disable feature profiles (bug 979932, bug 980124)
cachebust iarc icons (bug 980618)
Reformat the debug features page to be mobile-friendly (bug 980409)
Sort features before displaying them in debug page
Merge pull request #391 from ngokevin/cachebust2

cachebust iarc icons (bug 980618)