Fixes #53: joda-beans, jacoco, httpcomponents

Updated ${org.joda.joda-beans.version} from 0.9.6 to 0.9.7
Updated ${jacoco-maven-plugin.version} from 0.6.4.201312101107 to 0.6.5.201403032054
Updated org.apache.httpcomponents:httpclient:jar:4.3.2 to version 4.3.3
Updated org.apache.httpcomponents:httpclient-cache:jar:4.3.2 to version 4.3.3
Update maven-release-plugin to 2.5.
- Not necessary to define sourceEncoding explicit, cause
  it's default of the plugin.