Add Serbian translation and update translations

SoObjects/Mailer/GNUmakefile

@@ -88,7 +88,9 @@ Mailer_RESOURCE_FILES += \
 	SOGoMailPortugueseForward.wo \
 	SOGoMailPortugueseReply.wo \
 	SOGoMailRussianForward.wo \
+	SOGoMailSerbianForward.wo \
 	SOGoMailRussianReply.wo \
+	SOGoMailSerbianReply.wo \
 	SOGoMailSlovakForward.wo \
 	SOGoMailSlovakReply.wo \
 	SOGoMailSlovenianForward.wo \

SoObjects/Mailer/SOGoMailForward.h

@@ -106,6 +106,9 @@
 @interface SOGoMailRussianForward : SOGoMailForward
 @end
 
+@interface SOGoMailSerbianForward : SOGoMailForward
+@end
+
 @interface SOGoMailSlovakForward : SOGoMailForward
 @end
 

SoObjects/Mailer/SOGoMailForward.m

@@ -317,6 +317,9 @@
 @implementation SOGoMailRussianForward
 @end
 
+@implementation SOGoMailSerbianForward
+@end
+
 @implementation SOGoMailSlovakForward
 @end
 

SoObjects/Mailer/SOGoMailReply.h

@@ -105,6 +105,9 @@
 @interface SOGoMailRussianReply : SOGoMailReply
 @end
 
+@interface SOGoMailSerbianReply : SOGoMailReply
+@end
+
 @interface SOGoMailSlovakReply : SOGoMailReply
 @end
 

SoObjects/Mailer/SOGoMailReply.m

@@ -153,6 +153,9 @@
 @implementation SOGoMailRussianReply
 @end
 
+@implementation SOGoMailSerbianReply
+@end
+
 @implementation SOGoMailSlovakReply
 @end