Hi Ben
I don't understand.
You could not have had theme-selva before having dotlrn, as dotlrn is still a dependency.
1. I don't see ny missing message keys in the public pages. Please report them in bugtracker, I will add them ASAP.
2. sorry I don't understand "there are no links behind.."
3. There is a paramneter to turn off logo, go to site-map -> theme-selva - parameters