Data providers, Logintest, TestBase

This reverts commit 6ac6945c2ad5bc0f9f19b9b04ee7989f2b5707cf.

Conflicts:
	src/test/java/ru/telran/sel/LoginTests.java
	test-output/emailable-report.html
	test-output/index.html
	test-output/junitreports/TEST-ru.telran.sel.LoginTests.xml
	test-output/old/index.html
	test-output/testng-failed.xml
	test-output/testng-results.xml