first commit of the PsGui project code
Merge pull request #2 from igable/master

add a readme with some basic instructions and link to documents
upload first version of datastore with hibernate
added log4j to the data store, to find out problem with ISO date conversion
finished the host functions, added log4j
finished site manipulation functions
fixed the consistency requirement when deleting hosts: before deleting a host remove it from all sites
added GET and POST methods for marix requests. PUT and DELETE are partially done
I am in the middle of rewriting internal representation of PsMatrix type. Code does not compile at this moment
work continues on matrix object representation. Code still does not work
fixed bughs in addhostids function, but services in matrix do not appear properly. Code still not ready
fixed the JSON conversion problem for matrix services.
Use the newly suported relative links for .md files