upgrade Ember CLI and blueprints to v4.4 #4

Job	Run time
lint ember templates	1m 30s
Test php backend (7.2)	17s
lint javascript	1m 3s
Test php backend (7.3)	19s
test against additional browser in BrowserStack	3m 30s
test bundlesize	2m 33s
Test php backend (7.4)	23s
test against Chrome	2m 30s
Test php backend (8.0)	17s
test CSP in .htaccess	1m 9s
test against Firefox	3m 17s
Test php backend (8.1)	22s
Test php backend (8.2)	21s
	17m 31s

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