More specific workaround for no rows in TreeTable with pagelenght = 0 (#9203)

svn changeset:25915/svn branch:6.8

Conflicts:
	client/src/com/vaadin/client/ui/VScrollTable.java

Change-Id: I3f5b9dc988f5911023f77f184f5bd6770bbd9f1b
Warn if using old widgetset (#11836)

Change-Id: Id7332da3468572f4df55aa7b3fed39ef811fe09d
Verify that tests are run with the expected JRE version (#11835)

Change-Id: I77b48cc646776a452204e2c93954fdd1eea7e4de
Merge "Clean up Table popup menu close handler to prevent a memory leak" from 6.8 (#11840)

svn changeset:25919/svn branch:6.8

Change-Id: If0b414588252226947230cf2f7a5a8ab253cc5d7
Eliminate unnecessary conversions of option keys

Change-Id: I5f3b267cec0357fe1a1c1a13bafdf3c1f3b6d426
Clear items in ComboBox only if changed (#10924)

Selection is now sent only as a key, removed redundant attribute on the
item.

Change-Id: I882d4ae17a1dc91f7a55a0b4a94e47c078ffc022
Fix NPE if there's no query in the URI (#11836)

Change-Id: I8960e5917ffb0988e705599d1fe5e8aacf2654ef
Merge changes from origin/7.0

55ea6dc More specific workaround for no rows in TreeTable with pagelenght = 0 (#9203)
dca728c Warn if using old widgetset (#11836)
936439d Verify that tests are run with the expected JRE version (#11835)
29eeda5 Merge "Clean up Table popup menu close handler to prevent a memory leak" from 6.8 (#11840)
6d7f5e4 Eliminate unnecessary conversions of option keys
b8c6a15 Clear items in ComboBox only if changed (#10924)
42545ac Fix NPE if there's no query in the URI (#11836)

Change-Id: I2e50ba59b45720a879c6e476333369523a730b9c