Ignore orphaned .git folder in repositories folder (issue-256)

releases.moxie

 	 - Fixed AddIndexedBranch tool --branch parameter (issue 247)  
 	 - Improve NPE handling for hook script enumeration (issue-253)
 	 - Workaround missing commit information in blame page (JGit bug 374382, issue-254) 
+	 - Ignore orphan ".git" folder in the repositories root folder (issue-256)
 
 	changes:
 	 - Improved error logging for servlet containers which provide a null contextFolder (issue 199)

src/main/java/com/gitblit/utils/JGitUtils.java

 		list.addAll(getRepositoryList(repositoriesFolder.getAbsolutePath(), repositoriesFolder,
 				onlyBare, searchSubfolders, depth, patterns));
 		StringUtils.sortRepositorynames(list);
+		list.remove(".git"); // issue-256
 		return list;
 	}