Various bug fixes and new features.

Replace the following files/snippets:

• Replace: assets/js/ directory
• Replace: assets/css/* files
• Replace: theme/gulpfile.js
• Replace: assets/scss/*

Changes:

• NEW: Church homepage, see index-church.html
• NEW: Knowledgeable homepage, see index-knowledgeable.html
• NEW: Select pickers page, see elements-select-pickers.html
• NEW: Maintenance page, see page-maintenance.html
• NEW: Site status page, see page-site-status.html
• NEW: Page titles examples page (more coming soon), see page-titles.html
• NEW: svg icon support on icon-Yx classes by adding .icon-svg class
• NEW: Added new .rounded-(5, 10, 15, 20, 25, 30, 35, 40, 45, 50) border radius classes
• NEW: Added new grey colour utils: bg-gray-(100-800) & text-gray-(100-800)
• NEW: Added new border responsive utils: .border-SIDE-BREAKPOINT & .border-SIDE-0-BREAKPOINT
• UPDATED: Renamed 404.html to page-404.html
• BUGFIX: index-forum.html form control height
• BUGFIX: Server off canvas plugin from fixed CDN URL