New features & bug-fixes

• Add connection group/organization support
• Improve explorer search support
• Update current cell background color
• Add activation support
• Add multiple model view support
• Add hint and confirm support for workbench
• PostgreSQL: hide template and temp database
• Update Chinese translation
• Improve NULL value support
• Fixed: MySQL/MariaDB dump crash issue
• Fixed: collector thread crash issue
• Fixed: export structure and data to file issue
• Fixed: source editor style scheme issue
• Fixed: SQL beauty and minify format issue
• Fixed: workspace layout reload issue
• Fixed: workspace layout saves issue (app close)
• Fixed: entity-relation model close issue