Collapsible panels for the block's toolbar#9687

Merged

youknowriad merged 10 commits intomasterfrom add/collapsible-segments

Sep 14, 2018

+185-62

Commits on Sep 13, 2018

Make the active item noticeable
youknowriad
committed
Polish dropdown arrow. Now it's the same as for switcher.
Joen Asmussen
committed
Polish focus styles.
Joen Asmussen
committed
Address feedback.
jasmussen
committed

Commits on Sep 14, 2018

Small changes per review
youknowriad
committed