Merge pull request #2480 from nabinhait/fix1

Fixes for discount amount
Merge pull request #2484 from nabinhait/fix1

Leave application fix
Merge pull request #2486 from nabinhait/fix1

Removed gross profit field from sales invoice
Fix - Total Fixed Cost with patch
patch fix
Merge pull request #2482 from neilLasrado/fix-cost

Fixed cost calculation Error
Fixed bom patch