Road to extension index

[rasakereh]

Major changes has introduced to the plugin to make it ready to be published on 3D Slicer Extension Index Catalog. Among the main changes, we have:

• Client-Server arch for the module has changed. It was the main source of bugs and problems in previous versions
• We now support "Save Scene" functionality of 3D Slicer.
• More flexibility has been introduced to the preprocessing step.
• The plugin is slightly faster in both load time and runtime