Several feature and visual fixes for ng6:

• The "download_symlink" workflow has been reworked to allow the download of project data, even if some analysis data folder (Ont_Demultiplex) are empty or missing. This should resolve the CLIMARES download problem. (issue #153)
• The switch_space_id workflow has been updated, to support the migration of missing or empty analyzes. This should resolve the CfDaily problem. (issue #129).
• Update to the "illumina_10X" to handle indexes after illuminafilter. (issue #143)
• A warning is now handled when creating a project (issue #155).
• Several design updates and adjustments (issues #156, #150).