I don't know if I'm doing this right. Essentially it upgrades to BS 5. I took out the html file for BS3. The default index is now for BS5 and I removed the button for switching between 3 and 5 since we don't need it this way. You could use this as a basis for a larger change with a switch between 4 and 5 maybe, or as is, or even not at all... I sense you're busy on other projects like me.
I don't know if I'm doing this right. Essentially it upgrades to BS 5. I took out the html file for BS3. The default index is now for BS5 and I removed the button for switching between 3 and 5 since we don't need it this way. You could use this as a basis for a larger change with a switch between 4 and 5 maybe, or as is, or even not at all... I sense you're busy on other projects like me.