Fix Russian translation on series info page.

Fix #520

Author: aarexer

src/main/resources/ru/mystamps/i18n/Messages.properties

@@ -146,6 +146,7 @@ t_add_info = Add info
 t_was_selling_for = was selling for
 t_sold_to = sold to
 t_sold_for = for
+t_not_chosen_masculine = Not chosen
 
 # category/add.html
 

src/main/resources/ru/mystamps/i18n/Messages_ru.properties

@@ -146,6 +146,7 @@ t_add_info = Добавить
 t_was_selling_for = продавал за
 t_sold_to = продал
 t_sold_for = за
+t_not_chosen_masculine = Не выбран
 
 # category/add.html
 

src/main/webapp/WEB-INF/views/series/info.html

@@ -387,7 +387,7 @@ <h5 th:text="|#{t_add_info_who_selling_series}:|">Add info about selling/buying
 											</label>
 											<div class="col-sm-6">
 												<select id="seller" class="form-control" required="required" th:field="*{sellerId}">
-													<option value="" th:text="#{t_not_chosen}">Not chosen</option>
+													<option value="" th:text="#{t_not_chosen_masculine}">Not chosen</option>
 													<!--/*/
 													<option th:each="seller : ${sellers}" th:value="${seller.id}" th:text="${seller.name}"></option>
 													/*/-->
@@ -480,7 +480,7 @@ <h5 th:text="|#{t_add_info_who_selling_series}:|">Add info about selling/buying
 											</label>
 											<div class="col-sm-6">
 												<select id="buyer" class="form-control" th:field="*{buyerId}">
-													<option value="" th:text="#{t_not_chosen}">Not chosen</option>
+													<option value="" th:text="#{t_not_chosen_masculine}">Not chosen</option>
 													<!--/*/
 														<option th:each="buyer : ${buyers}" th:value="${buyer.id}" th:text="${buyer.name}"></option>
 													/*/-->