Improve string quality and consistency

src/pretix/control/logdisplay.py

@@ -527,7 +527,7 @@ def pretixcontrol_orderposition_blocked_display(sender: Event, orderposition, bl
     'pretix.event.order.invoice.sent': _('The invoice {full_invoice_no} has been sent.'),
     'pretix.event.order.invoice.sending_failed': _('The transmission of invoice {full_invoice_no} has failed.'),
     'pretix.event.order.invoice.testmode_ignored': _('Invoice {full_invoice_no} has not been transmitted because '
-                                                     'no transmission provider supports test mode invoices.'),
+                                                     'the transmission provider does not support test mode invoices.'),
     'pretix.event.order.invoice.retransmitted': _('The invoice {full_invoice_no} has been scheduled for retransmission.'),
     'pretix.event.order.comment': _('The order\'s internal comment has been updated.'),
     'pretix.event.order.custom_followup_at': _('The order\'s follow-up date has been updated.'),

src/pretix/control/templates/pretixcontrol/organizers/plugin_events.html

@@ -22,7 +22,7 @@
     {% elif plugin.level == "event_organizer" %}
         <p>
             {% blocktrans trimmed with name=plugin.name %}
-                The plugin "{{ name }}" is enabled for your organizer account,  but also needs to be enabled for the
+                The plugin "{{ name }}" is enabled for your organizer account, but also needs to be enabled for the
                 specific events you want to use it with.
             {% endblocktrans %}
         </p>