Removed the need to explicitly pass initial attributes for all built-in editors

Libraries/iTasks/Extensions/Admin/WorkflowAdmin.icl

Libraries/iTasks/Extensions/DateTime.icl

Libraries/iTasks/Extensions/Document.icl

Libraries/iTasks/Extensions/Form/Pikaday.icl

Libraries/iTasks/Extensions/Image.icl

Libraries/iTasks/Extensions/User.icl

Libraries/iTasks/Extensions/Web.icl

Libraries/iTasks/UI/Editor/Containers.dcl

Libraries/iTasks/UI/Editor/Containers.icl

Libraries/iTasks/UI/Editor/Controls.dcl

Libraries/iTasks/UI/Editor/Controls.icl

Libraries/iTasks/UI/Editor/Generic.icl

Libraries/iTasks/WF/Tasks/Interaction.icl

Tests/Tests/Interactive/BuiltinContainers.icl

Tests/Tests/Interactive/BuiltinEditors.icl

Tests/Tests/Interactive/CustomEditors.icl

Tests/Tests/Interactive/TaskPatterns.icl