add better text truncation method #620

Job	Run time
Browser Stack Test (frontend, BS_OSX_Safari)	7m 1s
Browser Stack Test (frontend, BS_OSX_Safari)	7m 1s
Browser Stack Test (frontend, BS_IOS_SAFARI)	7m 37s
Browser Stack Test (frontend, BS_IOS_SAFARI)	8m 0s
Browser Stack Test (frontend, BS_CHROME_ANDROID)	8m 38s
Browser Stack Test (frontend, BS_CHROME_ANDROID)	8m 38s
Browser Stack Test (test-app, BS_OSX_Safari)	4m 44s
Browser Stack Test (test-app, BS_OSX_Safari)	4m 44s
Browser Stack Test (test-app, BS_IOS_SAFARI)	4m 42s
Browser Stack Test (test-app, BS_IOS_SAFARI)	4m 42s
Browser Stack Test (test-app, BS_CHROME_ANDROID)	4m 50s
Browser Stack Test (test-app, BS_CHROME_ANDROID)	4m 50s
Firefox Tests (frontend, latest-esr)	4m 30s
Firefox Tests (frontend, latest-esr)	4m 30s
Firefox Tests (test-app, latest-esr)	2m 29s
Firefox Tests (test-app, latest-esr)	2m 29s
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 5s
Firefox Tests (lti-dashboard, latest-esr)	1m 5s
Test and Capture Screenshots	0s
Test and Capture Screenshots (frontend)	10m 56s
	1h 44m 41s

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