PGLister is currently made to be run for PostgreSQL only. In an effort to get this software used by other organizations, this series of patches defines an ORGANIZATION_NAME configuration option and uses it to replace mentions of PostreSQL in templates. Additionally, new images for the banner are proposed, to replace mentions of PostreSQL by a sober "PGLister". Postgres' logo is, however, kept.
As a general rule, please post the patches no the thread of the description, and if it's more than one patch, in the same email. Right now the only thing I see to review is this description, that's kind of hard.
As for reviewing the general idea, I agree with that -- makes perfect sense to do that. I did note that Alvaro spotted that it also needs to look over all the rest of the text and find similar stuff -- like the image alt="" attribute. There may be more of those?