[BZ 1575920] Change charset of the email mime body to UTF-8

modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/core/EmailManagerBean.java

@@ -115,9 +115,9 @@ public Collection<String> sendEmail(Collection<String> toAddresses, String messa
             }
 
             mimeMessage.setSubject(messageSubject);
-            mimeMessage.setContent(messageBody, "text/plain");
+            mimeMessage.setContent(messageBody, "text/plain; charset=UTF-8");
         } catch (MessagingException e) {
-            e.printStackTrace(); // TODO: Customise this generated block
+            LOG.error("Error while creating MimeMessage, ", e);
             return toAddresses;
         }
 
@@ -213,4 +213,4 @@ private String cleanse(String passedValue, String defaultValue) {
         // cleanse no matter what, because it's possible the defaultValue has invalid characters too
         return Matcher.quoteReplacement(results);
     }
-}
+}