Fix some issues reported by lintian

Fix some issues reported by lintian

• Remove 1 obsolete maintscript entry.

• Bump debhelper from old 12 to 13. (package-uses-old-debhelper-compat-version)

• Set upstream metadata fields: Bug-Database, Repository-Browse. (upstream-metadata-file-is-missing)

• Update standards version to 4.6.1, no changes needed. (out-of-date-standards-version)

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/lintian-fixes.

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Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/insserv/d72ef2d3-4cad-4350-ae2f-8fa87f1b8619.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/0c/7a34f245cb426ab69773f4ad865eeeb774d108.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/b3/b29b6432f756e8cd0f495f616ca371d5dbda88.debug
-rwxr-xr-x  root/root   DEBIAN/preinst
-rwxr-xr-x  root/root   DEBIAN/prerm

No differences were encountered between the control files of package **insserv**

Control files of package insserv-dbgsym: lines which differ (wdiff format)

• Build-Ids: b3b29b6432f756e8cd0f495f616ca371d5dbda88 0c7a34f245cb426ab69773f4ad865eeeb774d108

You can also view the diffoscope diff (unfiltered).