Template/Update (Part 38)

* split Screenshot upload & management into separate endpoints
 * move shared functions to manager classes
 * cleanup javascript
 * move test for config screenshot min size to cfg class

setup/updates/1758578400_05.sql

@@ -0,0 +1,3 @@
+DELETE FROM `aowow_config` WHERE `key` = 'screenshot_min_size';
+INSERT INTO `aowow_config` (`key`, `value`, `default`, `cat`, `flags`, `comment`) VALUES
+    ('screenshot_min_size', 200, 200, 1, 1153, "minimum dimensions of uploaded screenshots in px (yes, it's square, no it cant go below 200)");

setup/updates/1758578400_06.sql

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+ALTER TABLE `aowow_screenshots`
+    MODIFY COLUMN `caption` varchar(200) DEFAULT NULL;