netdata: Streamline package

* Change maintainer to myself, asked by current maintainer
* Remove atomic workaround, it's been fixed upstream in 1.4.0
* Install all plugins, disable those that depends on external applications
* Remove bundled pyYAML library, use package if you want to use python plugins
* Remove "unused" files in webdata directory, saves about 900k
  Downside is that some _very_ old browsers might break however since netdata
  is very heavy on javscript you still need a somewhat recent one anyway to get
  a decent experience.

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

admin/netdata/files/netdata.conf

@@ -1,3 +1,16 @@
+### NetData Configuration
+
+### Notes about plugins
+###
+### charts.d    - REQUIRES Bash, enable here and edit charts.d.conf
+### apps        - none atm
+### node.d      - REQURIES node.js
+### tc          - QoS stats (if wanted)
+### cgcroups    - No support in OpenWRT/LEDE by default
+### health      - Disabled by default
+### KSM         - No support in OpenWRT/LEDE by default
+### python.d    - REQUIRES python and PyYAML, edit python.d.conf to enable
+
 [global]
 	run as user = nobody
 	web files owner = root
@@ -14,3 +27,10 @@
 	apps = no
 	node.d = no
 	tc = no
+	cgroups = no
+
+[health]
+	enabled = no
+
+[plugin:proc]
+	/sys/kernel/mm/ksm = no