Fixed strange behavior of TypesafeConfigReader trait.

Typesafeconfig trait was using TypesafeConfigReader object in #readJDBCSettings and #readConnectionPoolSettings. Because of this, TypesafeConfigReader#readJDBCSettings and #readConnectionPoolSettings couldn't load files other than application.conf.
Fixed test
Merge pull request #96 from tototoshi/fixed-typesafeconfig-reader-load-different-file

Fixed a bug which TypesafeConfigReader always calls the default reader method(which just reads only application.conf)
Tried .sbtrc
Tried .sbtrc
Removed .sbtrc due to OOMError on BuildHive
Changed TypesafeConfigReader#readJDBCSettings to accept null user and password.
Merge pull request #97 from tototoshi/accept-null-user-and-password

Changed TypesafeConfigReader#readJDBCSettings to accept null user and password
s/private/private[this]
Merge pull request #98 from xuwei-k/private-this

s/private/private[this]
Fixed dbconsole ignores an argument.

'if [ "$1" != "" ];' was always true because of 'shift' above.
Merge pull request #99 from tototoshi/fix-dbconsole-when-profile-specified

Fixed dbconsole command ignores profile.
Added show method
Added default tableName implementation
Prevented query exection errors for dbconsole
Removed workaround and added execute method
Added warn logging
Fixed tests for concurrency
version 1.4.8
Not working...