Images section (#813)

* Add new configuration options
* Refactor scan/clean
* Schema changes
* Add details to galleries
* Remove redundant code
* Refine thumbnail generation
* Gallery overhaul
* Don't allow modifying zip gallery images
* Show gallery card overlays
* Hide zoom slider when not in grid mode

pkg/manager/exclude_files.go

@@ -1,6 +1,7 @@
 package manager
 
 import (
+	"path/filepath"
 	"regexp"
 	"strings"
 
@@ -80,3 +81,14 @@ func matchFileSimple(file string, regExps []*regexp.Regexp) bool {
 	}
 	return false
 }
+
+func matchExtension(path string, extensions []string) bool {
+	ext := filepath.Ext(path)
+	for _, e := range extensions {
+		if strings.ToLower(ext) == strings.ToLower("."+e) {
+			return true
+		}
+	}
+
+	return false
+}