fix #765, avoid showing hidden items when inappropriate at Show All Folders

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Context.kt

@@ -289,7 +289,7 @@ fun Context.getCachedMedia(path: String, getVideosOnly: Boolean = false, getImag
         val shouldShowHidden = config.shouldShowHidden
         var filteredMedia = media
         if (!shouldShowHidden) {
-            filteredMedia = media.filter { !it.name.startsWith('.') } as ArrayList<Medium>
+            filteredMedia = media.filter { !it.path.contains("/.") } as ArrayList<Medium>
         }
 
         val filterMedia = config.filterMedia
@@ -303,6 +303,9 @@ fun Context.getCachedMedia(path: String, getVideosOnly: Boolean = false, getImag
             }
         }) as ArrayList<Medium>
 
+        Medium.sorting = config.getFileSorting(path)
+        filteredMedia.sort()
+
         callback(filteredMedia)
         media.filter { !getDoesFilePathExist(it.path) }.forEach {
             mediumDao.deleteMediumPath(it.path)