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/ar/common.json

@@ -325,13 +325,13 @@
     "view_contact": "عرض جهة الاتصال",
     "message_details": "تفاصيل الرسالة",
     "more_reply_options": "خيارات رد إضافية",
-    "set_color": "تعيين وسم",
+    "set_tag": "تعيين وسم",
     "tag": "وسم",
     "more_actions": "المزيد من الإجراءات",
     "previous": "السابق",
     "next": "التالي",
     "move_to": "نقل إلى...",
-    "remove_color": "إزالة الوسم",
+    "remove_tag": "إزالة الوسم",
     "more_count": "+{count} أخرى",
     "characters_count": "{count} حرفًا",
     "quick_reply_placeholder": "اكتب ردًا سريعًا...",
@@ -425,17 +425,6 @@
       "message_id": "معرّف الرسالة",
       "list_info": "معلومات القائمة"
     },
-    "color_tag": {
-      "title": "وسم لوني",
-      "red": "أحمر",
-      "orange": "برتقالي",
-      "yellow": "أصفر",
-      "green": "أخضر",
-      "blue": "أزرق",
-      "purple": "بنفسجي",
-      "pink": "وردي",
-      "none": "بلا"
-    },
     "tooltips": {
       "reply": "رد (r)",
       "reply_all": "الرد على الجميع (a)",
@@ -2033,8 +2022,7 @@
     "delete": "حذف",
     "mark_as_spam": "الإبلاغ عن بريد مزعج",
     "not_spam": "ليس مزعجًا",
-    "color_tag": "وسم",
-    "remove_color": "إزالة الوسم",
+    "tag": "وسم",
     "items_selected": "{count} رسالة محددة",
     "edit_draft": "تعديل المسودة",
     "cancel_scheduled_send": "إلغاء الإرسال",