code cleanup

.../java/org/codelibs/fess/app/service/SearchLogService.java

...ain/java/org/codelibs/fess/app/web/admin/AdminAction.java

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

...delibs/fess/app/web/admin/storage/AdminStorageAction.java

...codelibs/fess/app/web/admin/wizard/AdminWizardAction.java

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

src/main/java/org/codelibs/fess/app/web/go/GoAction.java

.../org/codelibs/fess/app/web/thumbnail/ThumbnailAction.java

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

...ain/java/org/codelibs/fess/crawler/FessCrawlerThread.java

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

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

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

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

.../java/org/codelibs/fess/dict/protwords/ProtwordsFile.java

...delibs/fess/dict/stemmeroverride/StemmerOverrideFile.java

.../java/org/codelibs/fess/dict/stopwords/StopwordsFile.java

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

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

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