Channels layout improvements, other UI fixes

Extensions/Int+Format.swift

@@ -0,0 +1,29 @@
+import Foundation
+
+extension Int {
+    func formattedAsAbbreviation() -> String {
+        typealias Abbrevation = (threshold: Double, divisor: Double, suffix: String)
+        let abbreviations: [Abbrevation] = [
+            (0, 1, ""), (1000.0, 1000.0, "K"),
+            (999_999.0, 1_000_000.0, "M"), (999_999_999.0, 1_000_000_000.0, "B")
+        ]
+
+        let startValue = Double(abs(self))
+
+        guard let nextAbbreviationIndex = abbreviations.firstIndex(where: { startValue < $0.threshold }) else {
+            return String(self)
+        }
+
+        let abbreviation = abbreviations[abbreviations.index(before: nextAbbreviationIndex)]
+        let formatter = NumberFormatter()
+
+        formatter.positiveSuffix = abbreviation.suffix
+        formatter.negativeSuffix = abbreviation.suffix
+        formatter.allowsFloats = true
+        formatter.minimumIntegerDigits = 1
+        formatter.minimumFractionDigits = 0
+        formatter.maximumFractionDigits = 1
+
+        return formatter.string(from: NSNumber(value: Double(self) / abbreviation.divisor))!
+    }
+}