Apache SYNCOPE-809

The SYNCOPE-809 feature request points out the lack of a plugin for IDEs to allow users to create and edit mail templates and report stylesheets in the IDE itself instead of doing so using their dashboard. The feature request also provides a sample layout for the plugin where the mail and report templates are listed in a tree layout and made available for the user to view, edit and create new ones. The aim of this project will be to build a plugin that will solve the aforementioned problem and host it on the server so that end users can easily access and install the plugin on their own installation of eclipse and deployment of syncope.