fixed creation of continuous query

See merge request asapo/asapo!195

added four queries to be executed at start.

See merge request asapo/asapo!193

Those should create the two databases, a retention policy and a continuous query.

refactored the creation of the databases.

See merge request asapo/asapo!192

might not break now.

added the creation of the avgDB to main.go

See merge request asapo/asapo!191

Reverted GetTopology and GetGroupDelay

See merge request asapo/asapo!189

Changed queries to include an average bucket in query results

See merge request asapo/asapo!188

From "asapo_monitoring" to "asapo_monitoring_avg".
Added the averageSuffix "_avg" to Settings.go.