FS exporter should have a plugin that exports like Nuxeo Drive

An FS exporter should provide a way to export the repository like it is shown in Drive.

Default exporter plugin uses doc#getName() to get the name of the folder. Drive Exporter plugin should use the title of the document instead and avoid name collision by adding an integer at the end of the path.

Default exporter exports all blobs of a Document, Drive Exporter should only export the main blob (using BlobHolder#getBlob())

For collision of folder names, the plugin adds _n at the end of the name until one free is found. Example:

folderWithCollision
folderWithCollision_1
folderWithCollision_2

For collision of filenames, the plugin adds _n at the end of the name without the extension until one free is found. Example:

fileWithCollision
fileWithCollision_1
fileWithcollision.txt
fileWithcollision_1.txt