Release v8.0.4

• Update role-permisison-for-page-and-report.md
• [fix] Show project title in kanban view (#8268)
• [fix] tests
• [refactor] move purchase_common.js -> public/js/controllers/buying.js
• [fix] [refactor] demo for v8 and remove purchase common
• [Documentation] Added for custom roles for page and report, fixed some broken images
• [fix] salary component fix for abbr
• [enhance] Get project from bom on production order
• [fix] get_valuation_rate takes 4 arguments 3 given in gross profit report
• Used db_update in patch to bypass validate and on_update method
• [minor] refactor transaction.js