Fix two crashes

app/controllers/members_controller.rb

 
   def process_invite
     @person = Person.find_by(email: params[:person][:email])
+    new_rec = false
     if not @person
       @person = Person.new(invite_params)
-
+      new_rec = true
 
       if not @person.save
         respond_to do |format|
       end
     end
 
-    new_rec = @member.new_record?
     @member = Member.new(person: @person, group: @group, is_leader: false)
     @member.save!
 
-
     respond_to do |format|
       format.html do
         invited = ""
       if @member.save
         format.html {
           redirect_to group_member_url(@group, @member)
-          flash_message(:info, I18n.t('groups.member_added', name: @member.person.name))
+          flash_message(:info, I18n.t('groups.member_added', name: @member.person.full_name))
         }
         format.json { render :show, status: :created, location: @member }
       else

app/views/members/show.html.erb

-<%= t 'groups.member.ismember', group: @group.name, member: @member.person.full_name %>
+<%= t 'groups.member.ismember', group: @group.name, person: @member.person.full_name %>
 <%= link_to t(:edit), edit_group_member_path(@group, @member) %> |
 <%= link_to t(:back), group_members_path(@group) %>