DB/Spells: allow comment column in serverside spell fields to be empty and fixed some default values for short insert statements

sql/updates/world/4.3.4/2020_05_03_01_world.sql

@@ -0,0 +1,7 @@
+ALTER TABLE `spelleffect_dbc`
+    CHANGE `EffectPointsPerResource` `EffectPointsPerResource` FLOAT UNSIGNED DEFAULT 0 NOT NULL,
+    CHANGE `EffectIndex` `EffectIndex` INT(10) UNSIGNED DEFAULT 0 NOT NULL,
+    CHANGE `Comment` `Comment` VARCHAR(128) CHARSET utf8 COLLATE utf8_general_ci DEFAULT '' NOT NULL;
+
+ALTER TABLE `spell_dbc`
+    CHANGE `Comment` `Comment` VARCHAR(128) CHARSET utf8 COLLATE utf8_general_ci DEFAULT '' NOT NULL;