add default number to dropdown buttons

src/server/models/config.js

@@ -111,7 +111,10 @@ module.exports = function(crowi) {
       'customize:isEnabledTimeline' : true,
       'customize:isSavedStatesOfTabChanges' : true,
       'customize:isEnabledAttachTitleHeader' : false,
+      'customize:showPageLimitationS' : 20,
       'customize:showPageLimitationM' : 10,
+      'customize:showPageLimitationL' : 50,
+      'customize:showPageLimitationXL' : 20,
       'customize:isEnabledStaleNotification': false,
       'customize:isAllReplyShown': false,
 

src/server/routes/apiv3/customize-setting.js

@@ -154,10 +154,10 @@ module.exports = (crowi) => {
       isEnabledTimeline: await crowi.configManager.getConfig('crowi', 'customize:isEnabledTimeline'),
       isSavedStatesOfTabChanges: await crowi.configManager.getConfig('crowi', 'customize:isSavedStatesOfTabChanges'),
       isEnabledAttachTitleHeader: await crowi.configManager.getConfig('crowi', 'customize:isEnabledAttachTitleHeader'),
-      pageLimitationS: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationS'),
-      pageLimitationM: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationM'),
-      pageLimitationL: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationL'),
-      pageLimitationXL: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationXL'),
+      pageLimitationS: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationS') || 20,
+      pageLimitationM: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationM') || 10,
+      pageLimitationL: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationL') || 50,
+      pageLimitationXL: await crowi.configManager.getConfig('crowi', 'customize:showPageLimitationXL') || 20,
       isEnabledStaleNotification: await crowi.configManager.getConfig('crowi', 'customize:isEnabledStaleNotification'),
       isAllReplyShown: await crowi.configManager.getConfig('crowi', 'customize:isAllReplyShown'),
       styleName: await crowi.configManager.getConfig('crowi', 'customize:highlightJsStyle'),