codeception configs, web config modifed for db-settings
new entry points for application
colors added
tests modified, bootstrap added
configs fixed and improved
added testcase for unit tests, bootstrap files improved, tests inherited from base testcase
Create ColumnSchema.php
Create QueryBuilder.php
Create Schema.php
Edited introduction.
Edited the first quarter
updated doc.
Coding style PSR-2
tag for MongoDB unit tests fixed
Translating SQL-like syntax into Mongo syntax removed from "\yii\mongodb\Collection".
Replace request with response in code example
Merge pull request #1465 from Bethrezen/patch-3

Replace request with response in code example
added support for updateCounters to elasticsearch

issue #1313
Merge pull request #1406 from p0larbeer/master

DB Schema OCI
clean up oci driver.