code cleanup

src/main/java/org/codelibs/fess/FessBoot.java

...main/java/org/codelibs/fess/api/WebApiManagerFactory.java

...ava/org/codelibs/fess/app/service/ElevateWordService.java

...codelibs/fess/app/web/admin/backup/AdminBackupAction.java

...codelibs/fess/app/web/admin/design/AdminDesignAction.java

...pp/web/admin/dict/stopwords/AdminDictStopwordsAction.java

...ess/app/web/admin/maintenance/AdminMaintenanceAction.java

...codelibs/fess/app/web/admin/plugin/AdminPluginAction.java

src/main/java/org/codelibs/fess/app/web/api/ApiResult.java

...s/fess/app/web/api/admin/backup/ApiAdminBackupAction.java

...n/java/org/codelibs/fess/app/web/search/SearchAction.java

src/main/java/org/codelibs/fess/auth/chain/CommandChain.java

...fess/crawler/transformer/AbstractFessFileTransformer.java

...delibs/fess/crawler/transformer/FessXpathTransformer.java

...in/java/org/codelibs/fess/dict/kuromoji/KuromojiItem.java

.../java/org/codelibs/fess/dict/mapping/CharMappingItem.java

...delibs/fess/dict/stemmeroverride/StemmerOverrideItem.java

...main/java/org/codelibs/fess/dict/synonym/SynonymItem.java

...ibs/fess/ds/callback/FileListIndexUpdateCallbackImpl.java

.../java/org/codelibs/fess/es/client/SearchEngineClient.java