Adding all metrics to the configuration. Please NOTE: This invalidates the previous configuration files. The names for each metric have changed and are now standard to the type Metric_t in SMUCSensorBase.

-discard event-triggered snapshots. They are currently of no use for us
-increase log level of frequent but boring log messages
-extend patch to get rid of missing service warning

- Now throws invalid_argument instead of domain_error

- Now actually performs inserts into the Cassandra DB
- Supports insertion of parameters both from command line and env

- Removing -j option from tools Makefile as it conflicted with the
global one
- Adding grafanaserver executable to gitignore

- Termination of the Rest API relied on a "enabled" flag which was part
of a already-deallocated configuration structure
- Also fixed double termination of the Rest API

- Integrated the "disabled" parameter for operators
- "operatorPlugin" can be left empty if path and config are default
- "operatorPlugin" config field is relative to _cfgPath if not absolute
- Relaxed the operator name uniqueness constraint, duplicated operators
now have (again) all the same name
- Minor bugfixes

- Removed automatic assignment of sensor names to MQTT topics and vice
versa if either is empty
- All boolean checks now use the to_bool function

- MariaDB connector now compiles correctly on MacOS
- Perfevent DCDBPusher plugin re-added to targets

Fixing small bug in configurator. SMUCSensorBase: giving numbers to all Metrics (these will be used in the database as ids). Operator: changing some logs.