Saved filters (#1474)

* Refactor list filter
* Filter/criterion refactor
* Rename option value to type
* Remove None from options
* Add saved filter button
* Integrate default filters

pkg/database/database.go

@@ -23,7 +23,7 @@ import (
 var DB *sqlx.DB
 var WriteMu *sync.Mutex
 var dbPath string
-var appSchemaVersion uint = 24
+var appSchemaVersion uint = 25
 var databaseSchemaVersion uint
 
 var (

pkg/database/migrations/25_saved_filters.up.sql

@@ -0,0 +1,8 @@
+CREATE TABLE `saved_filters` (
+  `id` integer not null primary key autoincrement,
+  `name` varchar(510) not null,
+  `mode` varchar(255) not null,
+  `filter` blob not null
+);
+
+CREATE UNIQUE INDEX `index_saved_filters_on_mode_name_unique` on `saved_filters` (`mode`, `name`);