Don't crash with an NPE when the cache contains removed repositoried

Robin Rosenberg

2013-09-01 86dca9da11d66aba2104ab64fbe3affb5ebf0ff4

 src/main/java/com/gitblit/models/RepositoryModel.java

@@ -46,6 +46,7 @@
   public String description;

   public List<String> owners;

   public Date lastChange;

   public String lastChangeAuthor;

   public boolean hasCommits;

   public boolean showRemoteBranches;

   public boolean useTickets;