Add Serbian locale (#283)

lib/locales/sr.yml

@@ -0,0 +1,23 @@
+# :east_slavic pluralization (see https://github.com/ddnexus/pagy/blob/master/lib/locales/utils/p11n.rb)
+
+sr:
+  pagy:
+    item_name:
+      one: "ставка"
+      few: "ставкe"
+      many: "ставки"
+      other: "ставки"
+
+    nav:
+      prev: "‹ Претходна"
+      next: "Следећa  ›"
+      gap: "…"
+
+    info:
+      no_items: "Нema пронађених %{item_name}"
+      single_page: "Приказује се <b>%{count}</b> %{item_name}"
+      multiple_pages: "Приказ %{item_name} <b>%{from}-%{to}</b> од <b>%{count}</b> укупно"
+
+    combo_nav_js: "Страниca %{page_input} од %{pages}"
+
+    items_selector_js: "Прикажи %{items_input} %{item_name} по страниcи"

lib/locales/utils/p11n.rb

@@ -77,6 +77,7 @@
   hash['ko']    = p11n[:other]
   hash['pl']    = p11n[:polish]
   hash['ru']    = p11n[:east_slavic]
+  hash['sr']    = p11n[:east_slavic]
   hash['sv']    = p11n[:one_two_other]
   hash['sv-SE'] = p11n[:one_two_other]
   hash['tr']    = p11n[:other]