NAS-2355 Added loading of user specific jdk and logging of java version (on Linux).
NAS-2375 Compiles and test passes, HttpsRemoteFileRegistry disable because of keystore error.

GUI fails in test because of harvest.jar access read failure from securitymanager.
NAS-2375 Fixed HttpsRemoteFileRegistryTests.
NAS-2375 Disable security manager on all non-bitarchive applications.

 This has enable jsp pages to be compiled again, as Jetty9 needs to access the jdk provided compiler.
NAS-2375 Minor changes from review.
Merge branch 'master' into NAS-2375

Conflicts:
	common/common-test/src/test/java/dk/netarkivet/common/distribute/HTTPSRemoteFileTester.java
	common/common/src/main/java/dk/netarkivet/common/webinterface/GUIWebServer.java
NAS-2376 Fixed typo in BitachiveApplication detection.
NAS-2375 Updated travis config to use java8.