VisitorAPI throws error on invalid referrer

[hmboonstra]

DotCMS 3.5.1 throws an error if a referrer is passed with (for example) a space character in the URL.

ERROR business.VisitorAPIImpl: Invalid Referrer sent in request
java.net.URISyntaxException: Illegal character in query at index 33: http://www.ask.com/web?q=site:.nl .nl&frstpgo=0&page=1
        at java.net.URI$Parser.fail(URI.java:2848) ~[?:1.8.0_77]
        at java.net.URI$Parser.checkChars(URI.java:3021) ~[?:1.8.0_77]
        at java.net.URI$Parser.parseHierarchical(URI.java:3111) ~[?:1.8.0_77]
        at java.net.URI$Parser.parse(URI.java:3053) ~[?:1.8.0_77]
        at java.net.URI.<init>(URI.java:588) ~[?:1.8.0_77]
        at com.dotcms.visitor.business.VisitorAPIImpl.lookupReferrer(VisitorAPIImpl.java:172) [dotcms_3.5.1_3.5-8-g8506266.jar:?]
        at com.dotcms.visitor.business.VisitorAPIImpl.createVisitor(VisitorAPIImpl.java:117) [dotcms_3.5.1_3.5-8-g8506266.jar:?]
        at com.dotcms.visitor.business.VisitorAPIImpl.getVisitor(VisitorAPIImpl.java:70) [dotcms_3.5.1_3.5-8-g8506266.jar:?]
        at com.dotcms.visitor.business.VisitorAPIImpl.getVisitor(VisitorAPIImpl.java:45) [dotcms_3.5.1_3.5-8-g8506266.jar:?]

[stale]

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