feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

f_scripts/fe/js/uploader/i18n/ca.js

@@ -0,0 +1,2 @@
+// Catalan (ca)
+plupload.addI18n({"Stop Upload":"","Upload URL might be wrong or doesn't exist.":"","tb":"","Size":"","Close":"","Init error.":"","Add files to the upload queue and click the start button.":"","Filename":"","Image format either wrong or not supported.":"","Status":"","HTTP Error.":"","Start Upload":"","mb":"","kb":"","Duplicate file error.":"","File size error.":"","N/A":"","gb":"","Error: Invalid file extension:":"","Select files":"","%s already present in the queue.":"","File: %s":"","b":"","Uploaded %d/%d files":"","Upload element accepts only %d file(s) at a time. Extra files were stripped.":"","%d files queued":"","File: %s, size: %d, max file size: %d":"","Drag files here.":"","Runtime ran out of available memory.":"","File count error.":"","File extension error.":"","Error: File too large:":"","Add Files":""});