started to implement Open ID Connect using Nimbus libs; not working, yet.
small steps towards the OIDC goal
Completed sample OIDC Authorization Code flow.
Authentication with OIDC access token realized
introduced fetching OIDC configuration profile according to Open ID Discovery spec.
Open ID Discovery & Token Passing to Client

Open ID Connect provider configuration is now read, following the
official specification
(http://openid.net/specs/openid-connect-discovery-1_0.html). Name, logo,
client ID, client secret and provider endpoint URL are now read from a
new config file ./etc/oidc.json. Furthermore, added a redirect HTML
response that writes access token to local storage and allows to use
access token with LAS2peer REST API call.
Removed superflous dependency to json-simple
removed parts of OIDC flows (now done on client side as defined in specs);Web Connector accepts access token as query parameter and uses it for getting UserInfo from OIDC server to generate/retrieve LAS2peer agent
Merge branch 'oidc' of https://github.com/rwth-acis/LAS2peer-WebConnector into oidc
added ssl folder to gitignore (for key generation)
removed obsolete OpenID Connect configuration details; set default config to Layers OpenID Connect server
merged OIDC configuration fields into main Web Connector configuration.
removed superfluous oidc.json
minor changes
Merge remote-tracking branch 'origin/master' into oidc

Conflicts:
	src/main/java/i5/las2peer/webConnector/WebConnectorRequestHandler.java
fixed: classpath / imports
Set Layers OIDC Server as default
minor changes
Merge branch 'oidc' of https://github.com/rwth-acis/LAS2peer-WebConnector into oidc
minor changes