Changed the implementation of the Configuration module.
- Configuration value object is a hashtable.
- Values are validated.
Updated the file 'pom.xml'.
- Updated the version of Jetty.
- The version of all dependencies is setted by using properties.
- Added the description of the project.
ASPEM can be launched as an embedded server.
- The Grid Operator launches ASPEMs by using embedded Jetty servers.
- The description of the ASPEM is not stored into the database. It is retrieved from the context-params.
Removed the name of the ASPEM from the configuration object.
Merge branch 'config' into next

Conflicts:
	pom.xml
	src/main/java/es/siani/aspem/ApplicationBootstrap.java
Renamed the configuration file.

In order to have different properties files in each project, the name of each of these files is renamed by adding the name of the project as suffix.
Load the name of the ASPEM from the 'init-parameters'.

The name of the ASPEM is loaded from the 'init-parameters' of the file 'web.xml'. The dynamic instances of ASPEMs create new init-parameter on runtime with the name of the ASPEM. They are looked first for setting the ASPEM's name. It they do not exit, then the default init-parameters are loaded.
Updated the globals variables to match the new name of the properties file.
Added the classes 'Exp01' in the injection module.

The injection module instances by default the classes related to the Experiment 01.