Merge changes from origin/7.1

Merge changes from origin/7.1

377d49e Allow configuring deployment port for TB3 tests
6779857 Updatet servlet tests to follow the same *Test naming convention
e1c38bf Avoid obsolete calendar panel renderings to avoid various NPEs. (#12504,#12667)
63f10ec Fixed compilation error in TB3 test
3e593b0 Focus selected row in Table #12540
3c842b7 added small pause to make test pass
1b7e40d Only fetch rows if there are some (#11189)
f595d05 Make the various Writers member fields instead of local variables (#12446)
4cb304d Converted broken test to TB3
2aa2fdc Handle ClientMethodInvocation serialization with JSONArray as parameter (#12532)
1449425 Also hide shim iframe of VOverlay on setVisible(false) (#12731)
25fc2f2 Fix whitespace after including a mixin (#12715)
c29ca5e Update to atmosphere javascript 2.0.3-vaadin1 (#12241, #12127)
f75164f Disable unit cache to avoid compilation issues when switching between branches
6a99730 Allow skipping TB2/TB3 tests using tests.tb2/tb3.skip

Change-Id: I5a92798e66575c2cfd1d3f761a5f00af7e83dc64