IDMapperUniprot does not follow relative redirects

[stain]

When building 2.2.0 org.bridgedb.webservice.uniprot.Test fails with:

java.lang.IllegalArgumentException: host parameter is null
        at org.apache.commons.httpclient.HttpConnection.setHost(HttpConnection.java:249)
        at org.apache.commons.httpclient.SimpleHttpConnectionManager.getConnectionWithTimeout(SimpleHttpConnectionManager.java:189)
        at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:153)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
        at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
        at org.bridgedb.webservice.uniprot.IDMapperUniprot.runQuery(IDMapperUniprot.java:329)
        at org.bridgedb.webservice.uniprot.IDMapperUniprot.runMappingQuery(IDMapperUniprot.java:125)
        at org.bridgedb.webservice.uniprot.IDMapperUniprot.mapID(IDMapperUniprot.java:189)
        at org.bridgedb.webservice.uniprot.Test.testBasic(Test.java:40)

This is caused by the HttpStatus.SC_MOVED_TEMPORARILY handling not resolving relative URIs like /mapping/M20170829A7434721E10EE6586998A056CCD0537EF5E350T.tab according to the requested URI.

For some reason this uses method.setFollowRedirects(false);. The fix is to use URI.resolve() to ensure correct parsing of any relative URI.