Fix tabs not closing on double-click when the active tab is a PuTTY connection.

(cherry picked from commit 960ecba12a04770e07da6c9ece6e03cc9c8f1405)

Conflicts:
	CHANGELOG.TXT
Fix issue MR-339 - Connection group collapses with just one click

(cherry picked from commit 0a7c88a853323b13bc48e15be6cabda690e32be5)

Conflicts:
	CHANGELOG.TXT
Merge branch 'release/1.70' into develop

Conflicts:
	CHANGELOG.TXT