Added mangalib icons (#511)

Added mangalib icons

src/ru/mangalib/build.gradle

@@ -5,8 +5,8 @@ ext {
     appName = 'Tachiyomi: Mangalib'
     pkgNameSuffix = 'ru.mangalib'
     extClass = '.Mangalib'
-    extVersionCode = 1
-    extVersionSuffix = 1
+    extVersionCode = 2
+    extVersionSuffix = 2
     libVersion = '1.2'
 }