Fix some issues reported by lintian

Fix some issues reported by lintian

• Set upstream metadata fields: Bug-Database, Bug-Submit.
• Remove field Section on binary package network-manager-gnome that duplicates source. (installable-field-mirrors-source)
• Set upstream metadata fields: Bug-Database, Bug-Submit.
• Remove field Section on binary package network-manager-gnome that duplicates source. (installable-field-mirrors-source)
• Set upstream metadata fields: Bug-Database, Bug-Submit.
• Remove field Section on binary package network-manager-gnome that duplicates source. (installable-field-mirrors-source)
• Update standards version to 4.6.2, no changes needed. (out-of-date-standards-version)

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/8c/616c78880c33e437fc8057b4d89ad8225cc4e1.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/c4/c0e1c33b29d07472a969f24d3dd12bfb17c73f.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/65/78e63f3f2d99db16dc904fd93f732d8f6dad5e.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/c6/ad56e6ed78de89b2bfc9125470a62d350d7c5f.debug

No differences were encountered between the control files of package **network-manager-gnome**

Control files of package network-manager-gnome-dbgsym: lines which differ (wdiff format)

• Build-Ids: 6578e63f3f2d99db16dc904fd93f732d8f6dad5e c6ad56e6ed78de89b2bfc9125470a62d350d7c5f 8c616c78880c33e437fc8057b4d89ad8225cc4e1 c4c0e1c33b29d07472a969f24d3dd12bfb17c73f

You can also view the diffoscope diff (unfiltered).

This merge proposal was created by the Janitor bot, and it will automatically rebase or close this proposal as appropriate when the target branch changes. Any comments you leave here will be read by the Janitor's maintainers.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/network-manager-applet/eb1626cf-4078-4669-8204-d5d45bebe017.