Update to 1.1.0

• Update the sample configuration to add ISSUE_INDEXER_PATH in the new [indexer] section. While here, alphabetize sections and variables so future updates are easier to diff. Also merge duplicate section [session].

Changes: https://blog.gitea.io/2017/03/release-of-1.1.0/

PR: 217694
Submitted by: stb@lassitu.de (maintainer)
Approved by: lme (mentor)
Differential Revision: https://reviews.freebsd.org/D9963