Make it again "really" wrapped and update required dependencies

Currently the aim of this repo is to provide a wrapped version of the JIRA REST client developed by the atlassian. The cause of the library conflict can be simply avoided by adding the required version of the respective dependency explicitly, so **jersey-client** as **1.18.2**. Therefore the cloned source code has been removed again. The version "**2.0.0-m32-w1**" was also not reflecting the reality, since there is no version of atlassian JIRA REST client as **2.0.0-m32** except the local modified. The latest one is **2.0.0-m31**, so the first wrapped one should be **2.0.0-m31-w1**.