Collector: Add option to send yet average unitless metrics only to carbon (WIP)

refs #2274
Set default plot pattern to asterisk

refs #2274
Fix using function array dereferencing

refs #2274
Fix default template only displaying the first plot

refs #2274
Add slash (/) to carbon metric translation table

refs #2274
Add --with-backend switch to install scripts
Setup: Fix using arithmetic operators for string comparison

Signed-off-by: Eric Lippmann <eric.lippmann@netways.de>

fixes #2352
Send metrics to carbon in chunks
graphite: Save static metrics as JSON to the file system
graphite: Fix static metrics path missing plot name

refs #2274
web/graphite: Fetch static metrics

refs #2274
graphite/frontend: implement metrics cache

refs #2274
graphite: retrieve static metrics via XML-RPC

refs #2274
ingraph_collectord: JSON-RPC instead of XML-RPC
graphite: supports now both JSON-RPC and XML-RPC

refs #2274
UnixDaemon: catch KeyboardInterrupt
Remove show options from Tbar