Mark redirecting buttons with trailing '...'

Closes #2

app/helpers/application_helper.rb

@@ -84,7 +84,8 @@ module ApplicationHelper
   [:button_to, :link_to, :link_to_unless_current].each do |method_name|
     class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
       def image_#{method_name}(name, image = nil, options = nil, html_options = {}, &block)
-        name = svg_tag("pictograms/\#{image}") + name.to_s if image
+        name = name.to_s
+        name = svg_tag("pictograms/\#{image}") + name if image
 
         html_options[:class] = class_names(
           html_options[:class],
@@ -95,6 +96,11 @@ module ApplicationHelper
           html_options[:onclick] = "return confirm('\#{html_options[:onclick][:confirm]}');"
         end
 
+        if __method__.start_with?('image_link_to') &&
+             !(html_options[:onclick] || html_options.dig(:data, :turbo_stream))
+          name = name + '...'
+        end
+
         send :#{method_name}, name, options, html_options, &block
       end
     RUBY_EVAL

app/views/default/units/index.html.erb

@@ -1,7 +1,7 @@
 <div class="rightside buttongrid">
   <% if current_user.at_least(:active) %>
     <%# TODO: implement Import all %>
-    <%#= image_link_to t('.import_all'), 'download-multiple-outline',
+    <%#= image_button_to t('.import_all'), 'download-multiple-outline',
       import_all_default_units_path, data: {turbo_stream: true} %>
   <% end %>
   <%= image_link_to t('.back'), 'arrow-left-bold-outline', units_path, class: 'tools' %>