[Stylesfactory] Vertiforo Dark 2.3.4d

SFCore compatibility fixes
xmas snow animation fixes
xmas missing icons fixes

• working with latest version of Xenforo

• fixed files directiories
• changed permissions settings for announcements
• preview for node icon in node list
• preview for node icon in forum edit
• preview for node background in forum edit
• preview for font awesome in forum edit
• fixed missing phrases
• changed some text explanations to make them easier to understand
• fixed override of some nodes icons

working with latest versions

• new beta version of SFCore with improved settings management
• dark/light mode
• translation fixes
• new extension with portal page with slider (only for patrons)

• working with latest version
• fixed bugs reported since last version