Merge changes from origin/7.1

Merge changes from origin/7.1

7f7dc31 Base files for TB3 tests (#12572)
6b17abe Make it possible to override web driver in tests (#12572)
a682e3b Refactored build scripts to support TB2, TB3 + integration tests (#12572)
e556642 Converted servlet integration tests to TB3 (#12573)
21af0c3 Updated TB3 tests to use Firefox 24 (#12604)
a7583c6 TB3 test for browsers (#12572)
37b8543 Do not add empty package javadoc for new classes
0248b8f Fixes browser detection for IE11 (#12638)
1df28c3 Run TB3 tests also on IE11 (#12631)
a2daf65 Converted TB2 push tests to TB3 (#12580)
d3261d7 Fixes issue with Table not scrolling completely to the end #12651
bd0ae05 Limit the number of tests run concurrently (#12572)

Change-Id: Idb4389aac388b728490a4ffd57d30aee20ea9fe8