modify role handing and minor fixes

...org/codelibs/fess/app/web/base/login/FessLoginAssist.java

...ain/java/org/codelibs/fess/app/web/login/LoginAction.java

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

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

src/main/java/org/codelibs/fess/entity/FessUser.java

src/main/java/org/codelibs/fess/helper/SambaHelper.java

src/main/java/org/codelibs/fess/job/CrawlJob.java

src/main/java/org/codelibs/fess/job/SuggestJob.java

src/main/java/org/codelibs/fess/ldap/LdapManager.java

...ain/java/org/codelibs/fess/mylasta/action/FessLabels.java

.../java/org/codelibs/fess/mylasta/direction/FessConfig.java

...ain/java/org/codelibs/fess/mylasta/direction/FessEnv.java

...in/java/org/codelibs/fess/mylasta/direction/FessProp.java

src/main/resources/fess_config.properties

src/main/resources/fess_label_en.properties

src/main/resources/fess_label_ja.properties