fix to wrong instructions during a non-privileged install from installer (#7393)

* fix to wrong instructions during a non-privileged install from installer

* remove slashed in the install script

*  delete stray history files

netdata-installer.sh

@@ -989,14 +989,14 @@ either of the following sets of commands:
 
 To run apps.plugin with escalated capabilities:
 
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root:${NETDATA_GROUP} \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 0750 \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo setcap cap_dac_read_search,cap_sys_ptrace+ep \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root:${NETDATA_GROUP} "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 0750 "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo setcap cap_dac_read_search,cap_sys_ptrace+ep "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"${TPUT_RESET}
 
 or, to run apps.plugin as root:
 
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root:${NETDATA_GROUP} \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
-    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 4750 \"${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin\"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chown root:${NETDATA_GROUP} "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"${TPUT_RESET}
+    ${TPUT_YELLOW}${TPUT_BOLD}sudo chmod 4750 "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"${TPUT_RESET}
 
 apps.plugin is performing a hard-coded function of data collection for all
 running processes. It cannot be instructed from the netdata daemon to perform