Identify retryable transaction errors

Added support for inline comments for SQLite

fixes #1118

cover in test suite that platform throws exception on generating inline column comment SQL if unsupported

Call detectDatabasePlatform only once

fixes #1068

"Breaking" a test temporarily to show that it's not doing what is expect...

Add application_name to PostgreSQL driver

fixes #1089

PostgreSQL allows the user to set the application_name is connecting
to database. It is useful for monitoring purposes.
Currently one could just manually add 'application_name=foo' to DSN,
but having a parameter eases setting it using DoctrineBundle.

Fixed incorrect handling of single quotes in SQL-Strings

Check for foreign table name on removed tables foreign key

fixes #1185

Quote table and constraint names in drop foreign key / drop constraint SQL

fixes #1186

Fixing the command when option is CURRENT_SCHEMA

The schema's name in the alter session command must not be quoted
https://docs.oracle.com/cd/B28359_01/server.111/b28310/general009.htm

fixes #1352

Allow PHP7 + pdo_pgsql failures on Travis again

SqlConsoleCommand: Showing results of queries containing RETURNING

Pass "path" to pdo-sqlite drivers from DriverManager instead of "dbname"

also refactors URL path evaluation into smaller methods

fixes #1106

Stop using template1 as default database for postgres drivers

Fix test case on Oracle

Fix failing unit test on oracle - second try

Allow PHP7 failure on Travis again