Fix bugs related to committing and pushing sets of changes and branching.

lib/git_services.rb

@@ -132,16 +132,17 @@ module DtuCore
       if not_remote
         Rails.logger.warn "git_remote is false, skipping push"
       else
-        g.push remote: "origin", branch: self.git_branch
+        g.push(g.remote("origin"), g.branch(self.git_branch))
       end
     end
 
     def change_and_push(adds, rms, commit_message)
       begin
         g = Git.open(self.git_repo_info.local_repo_folder, :log => Rails.logger)
+        self.push g
         set_git_identity(g)
-        g.add(adds)
-        g.remove(rms)
+        g.add(adds) unless adds.empty?
+        g.remove(rms) unless rms.empty?
         g.commit(commit_message)
         self.push g
       rescue => e