created release tag for webx 3.0.7
created release tag for webx 3.0.6
created release tag for webx 3.0.5
created release tag for webx 3.0.4
created release tag for webx 3.0.3
created release tag for webx 3.0.2
改进pom使项目可在默认的maven repository下build, 改进mail service，使之在javamail 1.4.1… …和1.4.2下有一致的表现。