update license year and code style

pom.xml

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

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

src/main/java/org/codelibs/fess/api/BaseApiManager.java

src/main/java/org/codelibs/fess/api/BaseJsonApiManager.java

src/main/java/org/codelibs/fess/api/WebApiManager.java

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

src/main/java/org/codelibs/fess/api/WebApiRequest.java

src/main/java/org/codelibs/fess/api/WebApiResponse.java

src/main/java/org/codelibs/fess/api/es/EsApiManager.java

src/main/java/org/codelibs/fess/api/gsa/GsaApiManager.java

src/main/java/org/codelibs/fess/api/json/JsonApiManager.java

...java/org/codelibs/fess/api/suggest/SuggestApiManager.java

src/main/java/org/codelibs/fess/app/job/AllJobScheduler.java

...ain/java/org/codelibs/fess/app/job/ScriptExecutorJob.java

.../java/org/codelibs/fess/app/logic/AccessContextLogic.java

...in/java/org/codelibs/fess/app/pager/AccessTokenPager.java

src/main/java/org/codelibs/fess/app/pager/BadWordPager.java

src/main/java/org/codelibs/fess/app/pager/BoostDocPager.java

...in/java/org/codelibs/fess/app/pager/CharMappingPager.java