Added TEMPLATING.md

TEMPLATING.md

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+# Templating
+
+## eZ Platform Twig functions and filters comparison
+
+List of eZ Platform [Twig functions](https://doc.ezplatform.com/en/2.2/guide/twig_functions_reference/).
+
+|  eZ Platform                           | Netgen Site API      | Description |
+| -----------------                      |:---------------------|:------------|
+| ez_content_name                        | content.name         | displays a Content item's name in the current language |
+| ez_field_desciption                    | content.fields.field_identifier.description     			    | returns the description from the FieldDefinition of a Content item's Field in the current language |
+| ez_field_name                          | content.fields.field_identifier.name     			    | returns the name from the FieldDefinition of a Content item's Field in the current language |
+| ez_field_value                         | content.fields.field_identifier.value | returns a Content item's Field value in the current language |
+| ez_field                               | content.fields.field_identifier    			    | returns a Field from a Content item in the current language |
+| ez_file_size                           | -     			    | returns the size of a file as string |
+| ez_first_filled_image_field_identifier | -     			    | returns the identifier of the first image field that is not empty |
+| ez_image_alias                         | ng_image_alias	    | displays a selected variation of an image |
+| ez_is_field_empty                      | content.fields.field_identifier.empty | checks if a Content item's Field value is considered empty in the current language |
+| ez_render_field                        | ng_render_field 	    | displays a Content item's Field value, taking advantage of the template block exposed by the Field Type used |
+| ez_trans_prop                          | -     			    | gets the translated value of a multi valued(translations) property |
+| ez_urlalias                            | -     			    | is a special route name for generating URLs for a Location from the given parameters |
+| -                                      | ng_query             | returns Pagefanta instance for configured QueryType