xF2 Add-on [XFA] Core 2.4.0

Corrected bugs:

• Presence of some errorneous .min.min or .min.min.min js files

Modifications:

• Add of two new js libraries: qrcode and tooltipster

Add of fontawesome-iconpicker version 3.2.0 (to allow add-ons FA 5.5.0 compatibility upgrade)

Corrected bugs:

• Missing styles directory in release archive

New features:

• Add option class to allow select RM category
• Drag & drop js library added