Add title tooltip to objective buttons #979

Job	Run time
Browser Stack Test (frontend, BS_OSX_Safari)	8m 7s
Browser Stack Test (frontend, BS_OSX_Safari)	8m 7s
Browser Stack Test (frontend, BS_IOS_SAFARI)	7m 43s
Browser Stack Test (frontend, BS_IOS_SAFARI)	7m 43s
Browser Stack Test (frontend, BS_CHROME_ANDROID)	9m 32s
Browser Stack Test (frontend, BS_CHROME_ANDROID)	9m 42s
Browser Stack Test (test-app, BS_OSX_Safari)	4m 57s
Browser Stack Test (test-app, BS_OSX_Safari)	4m 57s
Browser Stack Test (test-app, BS_IOS_SAFARI)	5m 20s
Browser Stack Test (test-app, BS_IOS_SAFARI)	5m 20s
Firefox Tests (frontend, latest-esr)	4m 17s
Firefox Tests (frontend, latest-esr)	4m 17s
Browser Stack Test (test-app, BS_CHROME_ANDROID)	5m 18s
Browser Stack Test (test-app, BS_CHROME_ANDROID)	5m 18s
Firefox Tests (test-app, latest-esr)	2m 36s
Firefox Tests (test-app, latest-esr)	2m 36s
Firefox Tests (lti-course-manager, latest-esr)	1m 5s
Firefox Tests (lti-course-manager, latest-esr)	1m 5s
Firefox Tests (lti-dashboard, latest-esr)	1m 8s
Firefox Tests (lti-dashboard, latest-esr)	1m 8s
Test and Capture Screenshots	0s
Test and Capture Screenshots	0s
	1h 40m 16s

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