Updates to Bootstrap

[hannahekehoe]

See issue #69 for asset issues with webpacker/webpack.
Also in Rails 7 there may also be issues caused by importing Turbolinks which has been superseded by the newer Turbo framework- this may require an update here.
Code to create navbar resulted in link titles that only became visible on hover. There were several other issues with the display of bootstrap elements, like certain buttons not displaying despite sharing the same css class, or text visibility even with the same font color, etc. This may be another stylesheets linking issue? All of the bootstrap code could use a review/update (as a reference I got mine to work with some tweaks). Bootstrap can be fun to debug once webpack works : )