feat: improve visualization of tags

Previously tags where very much focused on color coding email and less about
adding additional information. They were also visualized in different ways in
different locations.

This commit gets rid of all "Color-coding" references, aligns visualization of
the tags across the whole project and tries to improve user experience of using
tags in general.

A search box is shown in the tagging control so the user can quickly search for
a tag if they have a huge (more than 10) amount of tags.

locales/tr/common.json

@@ -325,13 +325,13 @@
     "view_contact": "Kişiyi görüntüle",
     "message_details": "İleti Ayrıntıları",
     "more_reply_options": "Daha fazla yanıt seçeneği",
-    "set_color": "Etiket ayarla",
+    "set_tag": "Etiket ayarla",
     "tag": "Etiket",
     "more_actions": "Diğer işlemler",
     "previous": "Önceki",
     "next": "Sonraki",
     "move_to": "Şuraya taşı...",
-    "remove_color": "Etiketi kaldır",
+    "remove_tag": "Etiketi kaldır",
     "more_count": "+{count} daha",
     "characters_count": "{count} karakter",
     "quick_reply_placeholder": "Hızlı yanıt yazın...",
@@ -400,17 +400,6 @@
       "message_id": "İleti Kimliği",
       "list_info": "Liste Bilgisi"
     },
-    "color_tag": {
-      "title": "Renk Etiketi",
-      "red": "Kırmızı",
-      "orange": "Turuncu",
-      "yellow": "Sarı",
-      "green": "Yeşil",
-      "blue": "Mavi",
-      "purple": "Mor",
-      "pink": "Pembe",
-      "none": "Yok"
-    },
     "tooltips": {
       "reply": "Yanıtla (r)",
       "reply_all": "Tümünü Yanıtla (a)",
@@ -2033,8 +2022,7 @@
     "delete": "Sil",
     "mark_as_spam": "Spam bildir",
     "not_spam": "Spam değil",
-    "color_tag": "Etiket",
-    "remove_color": "Etiketi kaldır",
+    "tag": "Etiket",
     "items_selected": "{count} e-posta seçildi",
     "edit_draft": "Taslağı Düzenle",
     "cancel_scheduled_send": "Göndermeyi iptal et",