#18844: Fixing exception when previewing an empty query

Work Item: 18844

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branch : 1.x
#18859: Removing reference to missing css in numeric editor

Work Item: 18859

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#18866: Applying current culture when editing and displaying NumericField

The editor has been substituted to type="text" as chrome forces the user
to use '.' as a decimal separator, and other cultures as french could use ','
for instance.

Work Item: 18866

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#18869: Completing DateTime Field tokens

Work Item: 18869

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#18877: Adding a prefix to WidgetPart

Work Item: 18877

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#18909: Deleting associated publishing tasks when a content item is deleted

Work Item: 18909

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#18936: Fixing possible NRE in menu items display

Work Item: 18936

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#18955: Using GetMany() on bulk actions in Contents controller

Work Item: 18955

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#19054: Enable LinkToFirstChild on second-level admin menu item

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See workitem #18807

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#19020: Fixing email validation

Work Item: 19020

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#19027: Fixing script submission in custom forms

Work Item: 19027

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#19013: Fixing JSon formatting in widgets editor

Work Item: 19013

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#18993: Assigning "current" class based on urls too

Work Item: 18993

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#18978: Implementing CustomForms import/export

Work Item: 18978

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#18974: Including xml declaration in XmlRpc results

Work Item: 18974

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#18972: Disabling dynamic compilation by default on Azure Cloud Services

Work Item: 18972

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#18971: Disabling dynamic compilation in deployment packages

Work Item: 18971

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#18968: Fixing DateTimeField validation

Work Item: 18968

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Removing unused constant

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