I think my original reason for doing this was to prevent the button
from being operational until after the spinner initialization has
completed, so you don't get any weird half-functional spinner buttons.
However, in practice I'm finding that I constantly forget about this
and it adds tedium to creating spinner buttons.
Will review if any actual problems come up.
On the main tag listing, for child tags, you only get an unlink
button on hover. So if you want to delete a child tag you'd have to
unlink, then refresh, then delete. Now you can just go to its page
and delete it there.
This hook had a bug where you couldn't select text because every
time you push a button, including ctrl+a or shift+left/right, the
cursor position gets reset and then deselects immediately.
So let's only reset the content and cursor only when text changes,
so arrow keys and ctrl don't have any negative effects.
Unfortunately, when adjusting the box's value, it causes the datalist
to disappear, and it only comes back after you press another key.
I can't figure out how to make the datalist reappear automatically
with js.
This was less helpful than expected, because if you take that
tab and navigate somewhere else, then trying to open the clipboard
would replace the current tab instead of opening a new one.
The markup for the album listing page and individual album page
were different enough that I decided to make them wholly separate,
but then this left the shared javascript in its own stupid file
unlike any of the other types.
So, I'm merging them as a huge jinja if-else, which is also dumb
but it feels better than all these separate files.
