Adding method comments. Removing unused methods. Optimizing redundant code.
Refactor AndesConfigurationManager - handle extremely rare config related exceptions inside, instead of delegating it outisde and cluttering code.

Conflicts:
	features/andes/org.wso2.carbon.andes.server.feature/resources/conf/broker.xml
Merge pull request #80 from hastef88/overall_refactoring_v2

Adding further review comments on my contributions upto now
MySQL db-script changed to MyISAM and Oracle db-script added
Merge pull request #81 from indikasampath2000/config

MySQL db-script changed to MyISAM and Oracle db-script added
RDBMS store and class name update

 - H2 dbscript added
 - MySQL, MSSQL, Oracle DB scripts updated to new schema
 - RDBMS store names updated in broker.xml
Merge pull request #83 from Asitha/RDBMS-schema-update

RDBMS store and class name update