Pluralstories Tag Updates

Sneak: I did a much-needed update of the pluralstories tags! I know big sweeps like this make it harder for people but it really needed doing. <_<;

• The "language" tags have been popped out into their own section again because they were swamping the "access" tag section otherwise. The access section is way more manageable now!
• I changed all the "plural" tags to "1+" instead, which was long overdue. They're probably the tags people look at most, and having them under P meant they were buried at the end of the page, and also "plural" no longer felt expansive enough for my purposes. Renaming to "1+" solved both problems! :D
• In that vein, I relocated the "creator" tags into 1+, and I merged them into one "creator speaks from experience" tag. There were only two different tags in the first place ("plural creator" and "creator speaks from experience") because I created the "plural creator" one first, then realized that it wasn't expansive enough. That's a distinction that I no longer see as relevant to the archive. It felt like playing into turf wars.
• I merged the "dissociation" tag into "1+:type:medical" because that Venn Diagram is basically one circle.
• The 1+ change did mean I had to relabel the most vital "about the archive" tags with a preceding 0 so they'd stay on top, but oh well.

The 1+ tag is still hairier than I'd like, but oh well, it's an improvement!