OO-269 support for estonian language

src/main/webapp/static/themes/openolat/all/_icons.scss

@@ -99,6 +99,7 @@ a.b_small_icon:hover {
 .b_flag_da {background-image: url('../openolat/images/flags/dk.png');} 	
 .b_flag_cs {background-image: url('../openolat/images/flags/cz.png');} 	
 .b_flag_el {background-image: url('../openolat/images/flags/gr.png');} 	
+.b_flag_ee {background-image: url('../openolat/images/flags/ee.png');} 	
 .b_flag_ru {background-image: url('../openolat/images/flags/ru.png');} 	
 .b_flag_pl {background-image: url('../openolat/images/flags/pl.png');} 	
 .b_flag_zh_CN {background-image: url('../openolat/images/flags/cn.png');}