Reduce trust level required to make posts community wiki

It’d be helpful for posts which contain notes from group discussions to be “wiki” posts, so that other group members can contribute.

Currently, only users with trust level 3 or above can make their own posts into wiki posts. Gaining trust level 3 requires visiting the site 50 of the past 100 days, by default.

@dornawcox could you or another admin change the “min trust to allow self wiki” setting to 1 so that we can all set our posts to wiki mode and make them editable?

Done! Wikis can now be made by any trust level!