Ensure project admin URLs are matched
Fixed stupid caching mistake
Cleanup: make code more readable
More flexible way to customize behavior for each drop-down
No need to determine the initially-selected value

This is already done in `PTL.browser.fixDropdowns` when the `pageshow`
event fires.
Append prefix to context-specific drop-down elements

This workaround is to avoid having `<option>` elements with duplicated
`value` values, otherwise setting its value via select2/jQuery will fail.
Put order in the non-sense
Adjust breadcrumbs visibility after initial elements have been set

Avoids seeing selections being changed after the page has been loaded.
Cleanup: import order