Right-align whole tfoot in forms

nummi/main/static/main/css/form.css

@@ -35,7 +35,7 @@ table.file-input tr :last-child {
   padding-right: 0;
 }
 
-.buttons {
+form tfoot {
   text-align: right;
 }
 .buttons input {

nummi/main/templates/main/plot/history.html

@@ -22,7 +22,7 @@
                 {% for date in history.data %}
                     <tr>
                         <td class="icon">
-                            <span class="ri-{% if date.sum > 0 %}arrow-up-s-line green{% elif date.sum < 0 %}arrow-down-s-line red{% else %}equal-line{% endif %}"></span>
+                            <span class="ri-{% if date.sum > 0 %}arrow-up-s-line green{% elif date.sum < 0 %}arrow-down-s-line red{% endif %}"></span>
                         </td>
                         <th class="date" scope="row">{{ date.month|date:"Y-m" }}</th>
                         <td class="value">{{ date.sum_m|pmrvalue }}</td>

nummi/main/templatetags/main_extras.py

@@ -8,7 +8,7 @@ register = template.Library()
 @register.filter
 def value(val, pm=False, r=2):
     if not val:
-        return mark_safe("–")
+        return ""
     _prefix = ""
     _suffix = " €"
     _val = formats.number_format(round(val, r), r, use_l10n=True, force_grouping=True)