Release v7.0.12

• [Fix] batch no searching in pos
• Assigned permissions for Academic User role in Department
• Changed the order of the patch
• Create columns for custom fields in new table Salary Detail and Component
• Salary component fixtures
• Delete old salary earning and deduction doctypes
• minor fix for item and employee link formatter
• [demo] sales and purchase returns
• [new feature] Added Student Log
• Timesheets update on date changes in Salary Slip