modify button helpers slightly and add glyph_action_button_link helper

app/helpers/navigation_and_button_helper.rb

 module NavigationAndButtonHelper
+  GLYPH_TRANSLATE = {
+    show: { text: 'Anzeigen', glyph: 'eye-open' },
+    edit: { text: 'Bearbeiten', glyph: 'pencil' },
+    delete: { text: 'Löschen', glyph: 'trash' },
+    terminate: { text: 'Beenden', glyph: 'off' },
+    activate: { text: 'Aktivieren', glyph: 'ok' },
+    deactivate: { text: 'Deaktivieren', glyph: 'remove' },
+    back: { text: 'Zurück', glyph: 'arrow-left' },
+    print: { text: 'Ausdrucken', glyph: 'print' },
+    download: { text: 'Herunterladen', glyph: 'download-alt' },
+    yes: { text: 'Ja', glyph: 'ok' },
+    no: { text: 'Nein', glyph: 'remove' },
+    journal: { text: 'Journal', glyph: 'book' },
+    hours: { text: 'Stunden erfassen', glyph: 'time' },
+    billing_expenses: { text: 'Spesen', glyph: 'usd' },
+    assignment: { text: 'Begleitung', glyph: 'user' },
+    certificate: { text: 'Nachweis', glyph: 'education' }
+  }.freeze
+
   def form_navigation_btn(action, cols: 12, with_row: true, md_cols: nil, with_col: false,
     add_class: nil)
     button = make_nav_button(action)
@@ -12,6 +31,29 @@ module NavigationAndButtonHelper
     link_to text, target, class: "btn btn-#{type}#{btn_size}", **options
   end
 
+  def yield_button_link(target, **options)
+    btn_size = options[:dimension] && " btn-#{options[:dimension]}"
+    type = options.delete(:type)
+    link_to(target, class: "btn btn-#{type || 'default'}#{btn_size}", **options) do
+      yield
+    end
+  end
+
+  # bootstrap button link with action glyphicon
+  # Params:
+  #   action_type           - one of GLYPH_TRANSLATE's keys
+  #   target                - the path target for the link
+  #   title: 'string'       - optional title attribute, else it will be taken from
+  #                             GLYPH_TRANSLATE[action_type][:text]
+  #   dimension: [xs|md|lg] - optional dimension (Bootstrap's: xs, lg, md)
+  #   ..options             - any optional parameter link_to accepts
+  def glyph_action_button_link(action_type, target, **options)
+    options[:title] ||= GLYPH_TRANSLATE[action_type.to_sym][:text]
+    yield_button_link(target, **options) do
+      navigation_glyph(action_type)
+    end
+  end
+
   def make_nav_button(action)
     if action == :back
       text = navigation_glyph(:back)
@@ -32,25 +74,7 @@ module NavigationAndButtonHelper
   end
 
   def navigation_glyph(icon_type = :back)
-    translate_glyph = {
-      show: { text: 'Anzeigen', glyph: 'eye-open' },
-      edit: { text: 'Bearbeiten', glyph: 'pencil' },
-      delete: { text: 'Löschen', glyph: 'trash' },
-      terminate: { text: 'Beenden', glyph: 'off' },
-      activate: { text: 'Aktivieren', glyph: 'ok' },
-      deactivate: { text: 'Deaktivieren', glyph: 'remove' },
-      back: { text: 'Zurück', glyph: 'arrow-left' },
-      print: { text: 'Ausdrucken', glyph: 'print' },
-      download: { text: 'Herunterladen', glyph: 'download-alt' },
-      yes: { text: 'Ja', glyph: 'ok' },
-      no: { text: 'Nein', glyph: 'remove' },
-      journal: { text: 'Journal', glyph: 'book' },
-      hours: { text: 'Stunden erfassen', glyph: 'time' },
-      billing_expenses: { text: 'Spesen', glyph: 'usd' },
-      assignment: { text: 'Begleitung', glyph: 'user' },
-      certificate: { text: 'Nachweis', glyph: 'education' }
-    }
-    glyph_span(translate_glyph[icon_type.to_sym])
+    glyph_span(GLYPH_TRANSLATE[icon_type.to_sym])
   end
 
   def glyph_span(text: 'Zurück', glyph: 'arrow-left')