Indicate Empty track in otioview and display track name#677

Merged

ssteinbach merged 5 commits intoAcademySoftwareFoundation:masterfrom

KarthikRIyer:otioview-empty_track

Apr 15, 2020

Commits on Apr 1, 2020

Commits on Apr 2, 2020

Commits on Apr 14, 2020

display item count in tooltip and some minor changes
KarthikRIyer
committed