Imageinfo: prepare functionality to show privacy policy

Note:
Contents of policy files are not available with this commit. This
should be done related to own conditions by provider himself.
Providers are required by law to do this for their users as well.

Files must be installed in:

	installdir = $(DATADIR)/neutrino/policy

Providers should modify their buildsystem to install these files.
Filename sheme is
	<locale>.policy. eg 'english.policy'

If you want to add a policy file, take a look into sample file
	locale.policy.sample


Origin commit data
------------------
Commit: daa9522ddb
Author: Thilo Graf <dbt@novatux.de>
Date: 2018-11-01 (Thu, 01 Nov 2018)

data/Makefile.am

@@ -9,6 +9,7 @@ SUBDIRS = \
 	locale \
 	neutrino-scripts \
 	pictures \
+	policy \
 	scripts \
 	themes \
 	webradio \

data/locale/deutsch.locale

@@ -914,6 +914,7 @@ imageinfo.image Image:
 imageinfo.kernel Kernel:
 imageinfo.license Lizenz
 imageinfo.os System:
+imageinfo.policy Datenschutz
 imageinfo.vcs Git:
 imageinfo.version Version:
 imdb.api_key IMDb API Schlüssel

data/locale/english.locale

@@ -914,6 +914,7 @@ imageinfo.image Image:
 imageinfo.kernel Kernel:
 imageinfo.license License
 imageinfo.os System:
+imageinfo.policy Privacy Policy
 imageinfo.vcs Git:
 imageinfo.version Version:
 imdb.api_key IMDb API-Key

data/policy/Makefile.am

@@ -0,0 +1,4 @@
+installdir = $(DATADIR)/neutrino/policy
+
+install_DATA = \
+	locale.policy.sample

data/policy/locale.policy.sample

@@ -0,0 +1,6 @@
+Please modify content of this file and rename sample file.
+Filename sheme is <locale>.policy. eg 'english.policy'
+
+Files must be installed in:
+
+    $(DATADIR)/neutrino/policy