This commit:
1) fixes the customer invoice/vendor bill outstanding debit/credit warning anchor link
2) improves the customer invoice/vendor bill outstanding section
3) fixes the customer invoice/vendor bill outstanding debit/credit warning messages when viewing an account move reversal
4) modifies the order of the 'invoice lines' tab for mobile view
1) The anchor link did not work when pointing to a field (the id of a field is not propagated into the DOM).
Hence,the target field is put inside a div with the correct id.
2) The outstanding section is placed to the right, below the amount due and next to the description for clarity purpose.
The 'Add' button is turned into a secondary button (s.t. it is more noticeable). Each entry name is now a link to to the corresponding account move.
3) The warning messages are modified because they were not consistent and confusing when viewing an account move reversal.
4) Previously, the order on the 'invoice lines' tab was: narration>total>widget, now it is: total>widget>narration
task-2669132
closesodoo/odoo#78550
Signed-off-by: Laurent Smet <las@odoo.com>