Refactored db:maintain:check-tables to allow InnoDB and Memory tables to be optimized.
Initial add of Variables Command
[FEATURE] add command db:status and db:variables
Renamed CLI argument vars to search
Removed no-rounding flag and add it to rounding flag. If rounding =
-1 then reformatting is disabled
Merge remote-tracking branch 'upstream/develop' into dbCommandImprovements to keep up to date
TEST: fix CheckTablesTest
Bugfix in AbstractShowCommand for generateRows() when searching and
output format is CSV.
Add DB StatusCommandTest
Add DB VariablesCommandTest
Merge pull request #435 from Zookal/dbCommandImprovements

Db command improvements and new features with tests