Added backward compat for Greek translations

Author: squidfunk

material/partials/languages/gr.html

@@ -0,0 +1,5 @@
+{#-
+  This file was automatically generated - do not edit
+-#}
+{% import "partials/languages/el.html" as lang %}
+{% macro t(key) %}{{ lang.t(key) }}{% endmacro %}

src/partials/languages/gr.html

@@ -0,0 +1,27 @@
+<!--
+  Copyright (c) 2016-2021 Martin Donath <[email protected]>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to
+  deal in the Software without restriction, including without limitation the
+  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+  sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+  IN THE SOFTWARE.
+-->
+
+<!-- Kept for backward compatibility. This file will be removed in v8 -->
+{% import "partials/languages/el.html" as lang %}
+
+<!-- Re-export translations -->
+{% macro t(key) %}{{ lang.t(key) }}{% endmacro %}