Release v5.0.11

• Add changelog for v5.0.11 release
• [fix] Remove guest perms from Issue
• [minor] set timezone in posting time and added help
• [minor] remove letter head / terms from purchase invoice, fixes #3328, #3345
• [fix] [cleanup]
• [fix] [refactor] pos hangs in multi-company, if company is not set
• [fix] Check if company exists in re-order item. Fixes #3365.
• [fix] Product Search
• patch fix
• Fiscal Year removed from Material Request
• Fix _idx property as per renamed fields
• [fix] General ledger print format
• [cleanup] rename discount and reserver warehouse #3325
• [fix] clear barcode from table, fixes #3320
• [fix] workstation fixes related to Production Order
• [fix] target variance sql
• Fixes #3349. Thanks @abelbm for reporting.
• [fix] shopping cart - get price list for default territory if no price list is selected
• [fix] allow slashes in variables of website route rules
• [enhancement] list backups for download
• [enhancement] list backups for download
• [help] added links in modules, added learn desktop module