Expose custom fields outside the item view

Custom Field data for each item is now exposed where ever items are "prepared" (which is pretty much everywhere, lists, blocks, widgets etc). They are exposed as $item.customFields <--- an array, so to access a specific element, it would be $item.customFields[fieldId] where as fieldID is the unique ID of that field when you created it.

PHP:

  ["customFields"] => array(6) {
    ["_owntab1"] => string(14) "test test test"
    ["_owntab2"] => string(0) "some test text"
    ["_owntab3"] => string(0) "weeeeeeeee"
    ["_owntab4"] => string(0) "nom nom nom"
    ["selfplace1"] => string(6) "Pizza!"
    ["tab1_field2"] => array(2) {
      ["COLOR_1"] => string(7) "COLOR_1"
      ["COLOR_2"] => string(7) "COLOR_2"
    }
  }

Phrases are cached and now use Helpers, so to properly display COLOR_1

The first one is for the TITLE and the 2nd one is for the VALUE

HTML:

{xen:helper showcaseFieldTitle, $fieldId}

{xen:helper showcaseFieldValue, $item, $fieldId, {$item.customFields.{$fieldId}}}