Fix javadoc generation.

@see https://cwiki.apache.org/confluence/display/MAVEN/Java+8+Upgrade
@see http://stackoverflow.com/questions/15886209/maven-is-not-working-in-java-8-when-javadoc-tags-are-incomplete

Fix GH #84

[ci skip]

Author: php-coder

src/main/java/ru/mystamps/web/Url.java

@@ -27,7 +27,7 @@
  *
  * Should be used anywhere instead of hard-coded paths.
  *
- * @author Slava Semushin <[email protected]>
+ * @author Slava Semushin
  */
 public final class Url {
 	public static final String PUBLIC_URL            = "http://my-stamps.ru";

src/main/java/ru/mystamps/web/validation/jsr303/Email.java

@@ -39,7 +39,7 @@
  *
  * @see <a href="http://stackoverflow.com/q/4459474">Question at StackOverflow</a>
  * @see <a href="https://hibernate.atlassian.net/browse/HVAL-43">Issue in Hibernate's JIRA</a>
- * @author Slava Semushin <[email protected]>
+ * @author Slava Semushin
  */
 @org.hibernate.validator.constraints.Email
 @Pattern(regexp = ".+@.+\\..+")