[Merge] lp:~ahayzen/webbrowser-app/dnd-tabs-001 into lp:webbrowser-app/staging

[Olivier Tilloy]

Review: Needs Fixing

When I click on a link that opens a new tab (target="_blank"), I get the following error (and no new tab opened):

file://…/src/app/webbrowser/TabComponent.qml:256: TypeError: Property 'createTabHelper' of object Browser_QMLTYPE_77(0x25da090) is not a function
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https://code.launchpad.net/~ahayzen/webbrowser-app/dnd-tabs-001/+merge/308507
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