Initialise the data object to prevent warnings.#13

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chris-hall-hu wants to merge 3 commits intophilsturgeon:masterfrom

chris-hall-hu:master

Commits on Jun 18, 2014

Initialise the data object to prevent warnings.
chris-hall-hu
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Commits on Aug 26, 2014

Replace the set_variable call no longer available in version >= 2.8.
chris-hall-hu
committed

Commits on May 21, 2015

Update the rest of the set_variable calls for edit, copy etc.
chris-hall-hu
committed