65 of our plugins are bundled exploded instead of a .jar

Some are probably just mistakes and can easily be packed others are because of legacy code assuming it can access the files directly and even store data in the plugins - that should be fixed.

What should be fixed:
1. The way how plug-ins use images in plugin.xml, in java code and in .meta xmodel files
2. Plug-ins that loads resources should be aware that they are in jar now (VPE should be able to load templates from plugin jar files)
3. Some plug-ins contain resources registered in XML catalog
4. common.projecttemplates contains resources that is used as template for new projects
5. Help content that is stored in zip files should be unpacked
6. TBD