Vaultaire metadata is now an object

Keysplits shouldn't appear in the code any more, as metadata should be
an object of key/value pairs
Add metadata into metric object, and use for graphs

First implementation: color. For nagios graphs, a match on the service and metric name feeds a color that is then used by the graphs in place of the default color pallete
Color may be nil, so only parse if exists
Some vaultaire metadata for nagios uses v1 keynames
Move to_bool/check_param to app helper
Add zeromin flag toggle to rickshaw graphs

pending UI based toggle
Add zeromin toggle, cleanup graph invocation

Add the zeromin toggle - forces min y == 0. Button added to toggle in
navbar.

Also attempt to cleanup the configs by setting as an extended object to
split configs out
Update clizia.js
Add zeromin partial for navbar
metadata is now an object, no need to keysplit
add ui_default for zeromin
update clizia.js
Ensure utc clock config gets to graph
clock is a string, not a boolean
Update deploy for simpler logic
bumpversion