Upgrade netconf4j and netconf-server.

Use netconf4j feature created in netconf4j 0.0.7 version.
Use netconf-server 0.0.3 that incorporates a fix in its features.
Merge branch 'develop' into fix/use-netconf4j-feature

Conflicts:
	extensions/bundles/protocols.features/src/main/resources/features.xml

Conflict solved by changing commons-lang dependency in netconf4j feature.
Merge pull request #781 from isartcanyameres/fix/use-netconf4j-feature

Upgrade netconf4j and netconf-server.
Use netconf4j feature created in netconf4j 0.0.7 version.
Use netconf-server 0.0.3 that incorporates a fix in its features.

Netconf4j feature has now all his own dependencies.