gemspec, fix dependency to allow Blacklight 5.x and only 5.x, including pre
fix routing for BL5
fix facet label lookup for BL5
no longer a format_num helper

not sure where that went. use rails standard.
bootstrap3 proper filename for bootstrap tooltip.js
field name to_s
sometimes passed in as a symbol, not sure why, but can only be looked up as a string, not sure why either. but this works.
override facet_field_in_params? to recognize range limits
keep temporary params for looking up segments out of subsequent URL
update flot to latest 0.8.2
when facet initially hidden, render flot on show

Flot can only render in a div with width and height, which
a hidden div with auto width/height doens't usually have. Previously,
we tried to briefly show and then re-hide the div to get a width
to render flot. That was proving hard to maintain, especially when
at smallest size in bootstrap5 there are multiple layers of collapse
involved.

Now, we only render flot if facet content is visible -- and catch
the bootstrap collapsible show event to render when div is shown,
if initially hidden.
redraw chart to fit current screen on show

If screen resizes, chart may no longer be right size. Now you can close
(if needed) and (re-)open facet area, and it'll make chart resize
to screen.
remove old hover-legend stuff.

Was replaced with bootstrap tooltip a while ago, should probably have been removed then.
on redraw, fix selection too, it was getting messed up
replace jquery-ui slider with bootstrap-slider
custom event to redraw slider to match width of redrawn plot
HTML and CSS better for blacklight5
slider selection color match flot default selection color
html to style 'missing' facet appropriately for blacklight5
properly size slider on first draw in hidden div
reduce tooltip flicker