Fixes adapter check for postgres.

Primary key sequence is otherwise not reset.
Fixes default capitalization in user question.
Removes unused variables.
new version; updated changelog
update docs of pagination/controller
Removed saving the system user when granting him privileges since
saving a User is absolutely not save during migrations and this is
only used during migrations
use timeline local variable inside partials instead of instance variable
Merge pull request #477 from opf/fix/migrations