joda-time was in the wrong lib set
error log message generate a NPE.
many cleaning in discover agent:
- snmp DA don't manage multi-bytes OID
- hides don't manage multi-probe hides
- clear the discovered block, for better feed back
- other cleaning
Repaired sum tab
Oups junit failed for sum because of thrown exception
Don't be too picky about snmp specification
forward snmp exception, for better logging
Fixed two NPE
Fixed Detail view of Sum graphs
Merge pull request #26 from tgouverneur/master

Some morning fixes ;)
SNMP4JSettings.setForwardRuntimeExceptions(true); is not a good idea
Improved logging of invalid or empty /jsontree?
HostsList configure method was too big, sliced in smaller functions, with no side effects, they should be easier to tests.
First rough unit test for the improved test-friendly HostsList
Forgotten error message in Loader
Smart default value for DiscoverAgent form
This tab, the tabs are cleaned
status and reload button are now objects
Merge commit '8330aaf32084542c2ba2233d20c7e6a3c8cdccc8' into WithStore
Merge commit 'd02557df79e9dbec693adb09a897ecc7bf1f8627' into WithStore

Conflicts:
	src/jrds/graphe/Sum.java
Merge branch 'master' into WithStore

Conflicts:
	junit/jrds/TestSum.java