[zanata/zanata-platform] 4bab46: fix(ZNTA-2275): Make externalId unique

[GitHub]

  Branch: refs/heads/glossary-json-reader
  Home:   https://github.com/zanata/zanata-platform
  Commit: 4bab46b4dca796e223851fb3b82fbb5574664bf1
      https://github.com/zanata/zanata-platform/commit/4bab46b4dca796e223851fb3b82fbb5574664bf1
  Author: Damian Jansen <djansen at redhat.com>
  Date:   2018-02-22 (Thu, 22 Feb 2018)

  Changed paths:
    M server/zanata-model/src/main/java/org/zanata/model/HGlossaryEntry.java

  Log Message:
  -----------
  fix(ZNTA-2275): Make externalId unique