* update english documents

* refactor zk client

* update documents

* update zkclient

* update zkclient

* update documents

* add architecture-design

* change i18n

* update i18n

* update english documents

* add architecture-design

* update english documents

* update en-US documents

* add architecture-design

* update demo site

* add mybatis plus model

* modify mybatisplus

* modify mybatisplus

* change interface by mybatisplus

* add unit test

* refactor dao interface.

* add unit test for dao...

* add unit test for dao...

* add unit test for dao...

* Merge remote-tracking branch 'upstream/dev-db' into dev-db

# Conflicts:
#	dolphinscheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProjectMapper.xml
#	dolphinscheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ScheduleMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProcessInstanceMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProjectUserMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/QueueMapper.xml
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ProcessInstanceMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ProjectUserMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/QueueMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ResourceUserMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ScheduleMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/SessionMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/TenantMapperTest.java

* Merge remote-tracking branch 'upstream/dev-db' into dev-db

# Conflicts:
#	dolphinscheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProjectMapper.xml
#	dolphinscheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ScheduleMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProcessInstanceMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/ProjectUserMapper.xml
#	escheduler-dao/src/main/resources/cn.escheduler.dao.mapper/QueueMapper.xml
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ProcessInstanceMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ProjectUserMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/QueueMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ResourceUserMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/ScheduleMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/SessionMapperTest.java
#	escheduler-dao/src/test/java/cn/escheduler/dao/mapper/TenantMapperTest.java

* Merge remote-tracking branch 'upstream/dev-db' into dev-db

# Conflicts:
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/ProjectMapper.xml
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/ResourceMapper.xml
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/TaskInstanceMapper.xml

* update some dao bugs

* update for some bugs

* update some bugs

* Merge remote-tracking branch 'upstream/dev-db' into dev-db

# Conflicts:
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/ProjectMapper.xml
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/ResourceMapper.xml
#	dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/TaskInstanceMapper.xml

* update

* update

* add multiply settings for application.yml

* add multiply settings for application.yml

* revert

* update configuration settings in task record dao...

* change application_master to application-master

* change application_master to application-master

* update application.yml to application.properties

* revert

* revert

* add properties

* add properties

* revert

* revert

* add api start up..
add alert send try catch

* update dao info level

* fix bug: task cannot submit when recovery failover

* fix bug: task cannot submit when recovery failover

* merge from dev-db

* revert

* revert

* fix bug: get process definition list failed.

* fix bug: process instance interval is error

* revert

* revert

* update

* support stop submit success tasks

* update kill process

* update for stop process

* update for stop process

* add some logs for stop process

* update for small bug.

* add check strategy before submit task

* revert

* update

* update

* revert

* wait task instance exists if null.

* revert

* update

* change desc to description.

* add check user and definitions function when delete tenant

* update

* change desc to description.

* change desc to description.

* change desc to description.

* remove check resources when delete tenant

* change desc to description.

* change mybatisplus version to 3.2.0

* update

* change the notice to apache.

* update

* update postgre sql

* Remove useless dependencies and add jsp-2.1-6.1.14

* Determine if principal is empty in getJdbcUrl method

* fix bug  when register worker but create master node in zookeeper

* Remove useless dependencies such as hive-shims and log4j

* upgrade commons-email from 1.2 to 1.5 and remove mail-1.4.5.jar

* add support for postgresql in upgrade database

* add support for postgresql in upgrade database