Fix #942 : remove full config load in scheduler
Merge pull request #976 from geektophe/bp_rule_output_xof

Minor enhancement on business output processing.
Added service instance properties override feature

It allows to override specific service instances properties through the
definition of the new `serviceoverride` object. This is mainly useful for
dynamycally generated services such as those linked to host templates (those
defined in packs for instances), or linked to hostgroups. This allows to
override a specific instance parameters without having to define a complete
new service.
Imports `properties` attribute from Service class.
Fix use install script with not term

remove use of command tput sgr0 if not term defined like on cron (for
backup action)
avoid error: tput: unknown terminal "unknown"
Added multi valued attributes support.
Fixed multi valued attributes split evaluation.

If an object contains a multivalued attribute (that is reprented
internally by a list object), split should no be done on the split
separator as we do for string uniquely defined attributes (split has
already been done by the user).
Levered leading `+` limitatinon in multi value.
Oops... forgot to update quick_tests.py :)
Forgot `ShinkenTest` silent mode feature.
Implemented host property based service overrides.

Caution, it is taken the asumption that multi valued attributes are
implemented.
Forgot to update quick_tests.sh :)
Added business rules smart notifications feature.
Merge pull request #982 from cyrilleJ/master

Fix use install script with not term
Merge pull request #972 from geektophe/bp_rule_macro_expand

Added macro expansion to business rules.
Merge pull request #979 from DessaiImrane/master

Fix : #942
Fix: merge problems.
start cleaning setup.py
Removed unuseful [] on hard createed objects.
Merge pull request #984 from geektophe/multi_valued_attributes

Added multi valued attributes support