#1633 azure ad support

pom.xml

...g/codelibs/fess/app/web/base/login/AzureAdCredential.java

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

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

...codelibs/fess/app/web/base/login/LocalUserCredential.java

...libs/fess/app/web/base/login/OpenIdConnectCredential.java

...rg/codelibs/fess/app/web/base/login/SpnegoCredential.java

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

...java/org/codelibs/fess/app/web/profile/ProfileAction.java

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

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

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

src/main/java/org/codelibs/fess/sso/SsoAuthenticator.java

src/main/java/org/codelibs/fess/sso/SsoManager.java

.../java/org/codelibs/fess/sso/aad/AzureAdAuthenticator.java

...org/codelibs/fess/sso/oic/OpenIdConnectAuthenticator.java

...ava/org/codelibs/fess/sso/spnego/SpnegoAuthenticator.java

src/main/resources/fess_config.properties

src/main/resources/fess_sso++.xml

src/main/resources/fess_sso.xml