implemented a test for resolving base justifications
more testing, confident the resolution of base justifications now works
MARMOTTA-249: implemented web services infrastructure to delete prefixes
library updates, more reliable and generic retrying of SQL commands, tests for reasoner now working
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-marmotta into develop
MARMOTTA-249: fixed delete endpoint, and added ui
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-marmotta into develop