icons: move existing lock icon to header icons

Origin commit data
------------------
Branch: ni/coolstream
Commit: 488dfd7a0c
Author: vanhofen <vanhofen@gmx.de>
Date: 2018-01-04 (Thu, 04 Jan 2018)

Origin message was:
------------------
- icons: move existing lock icon to header icons

------------------
No further description and justification available within origin commit message!

------------------
This commit was generated by Migit

data/icons/headers/Makefile.am

@@ -16,6 +16,7 @@ install_DATA = \
 	keybinding.png \
 	language.png \
 	lcd.png \
+	lock.png \
 	mainmenue.png \
 	multimedia.png \
 	network.png \

data/icons/status/various/Makefile.am

@@ -4,7 +4,6 @@ install_DATA = \
 	ats.png \
 	ats_gray.png \
 	ca.png \
-	lock.png \
 	lock_passive.png \
 	mounted.png \
 	mute.png \