stupid inconsistent defalt applications for .cpp and .h files

[teo1978]

Steps to reproduce:
- Navigate to a folder that contains .h and .cpp files
- double-click on a .cpp file
- double-click on a .h file

Expected:
both should be opened by default with the same application. I'd say it would make more sense that it was gedit rather than vim, given that gedit is the default for most other extensions that typically correspond to other languages, e.g. .php, .java, etc. But anyway, .cpp and .h should have the same default

Observed:
the default for .h files is to open in gedit; the default for .cpp files is to open in vim in a terminal. That's just stupid.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nautilus 1:3.18.4.is.3.14.3-0ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-119.143-generic 4.4.114
Uname: Linux 4.4.0-119-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Apr 14 18:47:51 2018
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'190'
 b'org.gnome.nautilus.window-state' b'geometry' b"'1197x691+723+24'"
 b'org.gnome.nautilus.list-view' b'use-tree-view' b'true'
 b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'date_modified', 'date_accessed', 'owner', 'group', 'permissions', 'mime_type', 'where']"
InstallationDate: Installed on 2013-10-11 (1645 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.