New xsd to describe REx annotations.
New annotation (to go with RExExtracts).
Add container for RExExtracts and RExCompounds.
Alter the handler for marshalling and unmarshalling REx annotations.
Update test for RExHandler.
Update SBML writer to allow for RExCompound annotations.

Conflicts:
	io/xml-parsers/src/main/java/uk/ac/ebi/mdk/io/xml/sbml/SBMLIOUtil.java
Update SBMLReactionReader to read RExCompounds.

Conflicts:
	io/xml-parsers/src/main/java/uk/ac/ebi/mdk/io/xml/sbml/SBMLReactionReader.java
Update RExTag to store tag id.
Store whether the reaction is found in BRENDA and whether it is in the correct organism.
Allow the setting of parameters.
Store the total number of seed metabolites found in the source with each extract annotation.
Left over files.# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch feature-REx# Your branch is ahead of 'origin/feature-REx' by 1 commit.## Changes to be committed:#   (use "git reset HEAD <file>..." to unstage)##	modified:   domain/annotation/src/main/java/uk/ac/ebi/mdk/domain/annotation/rex/RExCompound.java#	modified:   io/xml-parsers/src/main/java/uk/ac/ebi/mdk/io/xml/rex/RExHandler.java#	modified:   io/xml-parsers/src/main/resources/uk/ac/bbk/rex/rex.xsd#	modified:   io/xml-parsers/src/test/java/uk/ac/ebi/mdk/io/xml/rex/RExHandlerTest.java#	modified:   io/xml-parsers/src/test/resources/uk/ac/ebi/mdk/io/xml/sbml/rex.xml#	new file:   service/hsqldb/src/test/resources/uk/ac/ebi/mdk/hsql/db/reaction.properties#
Remove ignored file from index.