Fix proe-button never appearing

toggle(boolean) didn't override .hide, since .hide is display: none *!important*
SequenceId for programs

* mongoose pre-save-middleware in charge of setting it for bot Programs and Accounts
* Use the sequenceId in proe-invoices
* Simplify account.sequenceId setting in sql-import
Entering a single number into the search field causes programs to be found by program.sequenceId as well as the name fields