Merge branch 'patch-14' into 'dev'

Add date/time plurals translation in JavaScript

See merge request hubzilla/core!1336

(cherry picked from commit a2575059e2)

5c0d3187 Add date/time plurals translation in JavaScript
729d0d53 Update language.php
f68674b3 Update js_strings.tpl
3ac4337a Update main.js
e96e3dc6 Update po2php.php
54bdf59d Update js_strings.php

include/language.php

@@ -254,6 +254,32 @@ function tt($singular, $plural, $count, $ctx = ''){
 	}
 }
 
+/**
+ * @brief Return slash separated string of plurals translation forms
+ *
+ * @param string $k key in translations array
+ * @return string
+ */
+function ta($k){
+
+        $t = App::$strings[$k];
+        if (is_array($t))
+                $t = implode("/", $t);
+        return ($t == "" ? $k : $t);
+}
+
+/**
+ * @brief Return string_plural_select_xx function code
+ *
+ * @return string
+ */
+
+function tf() {
+
+        $s = "plural_function_code";
+        return (x(App::$strings, $s) ? App::$strings[$s] : "return 0;");
+}
+
 /**
  * @brief Provide a fallback which will not collide with a function defined in
  * any language file.