* add functions for tracking related salary slips
* PEP 8 style
* put buttons into Make based on context
* add function to test for bank entry journal
* refeactor `add_bank_entry_button`
* "View Salary Slips" made a standalone secondary button
* set_inner_btn_group for Make Bank Entry
* refresh button after journal is submitted
* edit javascript test case
* codacy
* fix as per review
* no longer use $c