devices ventures changes report added
docs improved; days sub sql adjusted to more db engines
new devices report; tests for devices report
merge
removed _get_data from ventures changes report
Merge pull request #167 from mkurek/feature/device-ventures-changes-report

Feature/device ventures changes report
added reports (and reports plugins) tests
improved information plugin tests
docstring & comments fixed
flake8 fixes
extra costs - add more than 5 rows (with dynamic adding)
fixed header in csv statement
Merge pull request #172 from mkurek/fix/extra-costs-rows-limits

extra costs - add more than 5 rows (with dynamic adding)
Merge pull request #173 from mkurek/fix/statement-csv

fixed header in csv statement
added venture tree rebuild when plugin job is finished
PR fixes
Merge pull request #174 from mkurek/fix/ventures-paths

Added venture tree rebuild when venture plugin job is finished
Merge pull request #170 from mkurek/feature/device-report

Feature/device report
Merge branch 'develop' into feature/docs
Almost done