diff --git a/lib/plugins/gravatar/gitignore b/lib/plugins/gravatar/gitignore
new file mode 100644
index 0000000..4ebc8ae
--- /dev/null
+++ b/lib/plugins/gravatar/gitignore
@@ -0,0 +1 @@
+coverage
diff --git a/plugins/additionals/README.rst b/plugins/additionals/README.rst
deleted file mode 120000
index d46ade8..0000000
--- a/plugins/additionals/README.rst
+++ /dev/null
@@ -1 +0,0 @@
-docs/index.rst
\ No newline at end of file
diff --git a/plugins/additionals/assets/javascripts/eslintignore b/plugins/additionals/assets/javascripts/eslintignore
new file mode 100644
index 0000000..d304d63
--- /dev/null
+++ b/plugins/additionals/assets/javascripts/eslintignore
@@ -0,0 +1,5 @@
+# eslint ignore file
+*.js
+!additionals*.js
+!noreferrer.js
+!tooltips.js
diff --git a/plugins/additionals/assets/stylesheets/stylelintignore b/plugins/additionals/assets/stylesheets/stylelintignore
new file mode 100644
index 0000000..c234968
--- /dev/null
+++ b/plugins/additionals/assets/stylesheets/stylelintignore
@@ -0,0 +1,4 @@
+# stylelint ignore file
+bootstrap*
+*.map
+*.min.css
diff --git a/plugins/additionals/codeclimate.yml b/plugins/additionals/codeclimate.yml
new file mode 100644
index 0000000..fe12bce
--- /dev/null
+++ b/plugins/additionals/codeclimate.yml
@@ -0,0 +1,22 @@
+engines:
+  fixme:
+    enabled: false
+  eslint:
+    enabled: true
+  rubocop:
+    enabled: true
+  duplication:
+    enabled: true
+    config:
+      languages:
+      - "ruby"
+ratings:
+  paths:
+  - "**.css"
+  - "**.erb"
+  - "**.js"
+  - "**.rb"
+exclude_paths:
+- "test/"
+- "assets/javascripts/"
+- "assets/stylesheets/jquery.*"
diff --git a/plugins/additionals/eslintrc.yml b/plugins/additionals/eslintrc.yml
new file mode 100644
index 0000000..f0f5725
--- /dev/null
+++ b/plugins/additionals/eslintrc.yml
@@ -0,0 +1,17 @@
+env:
+  browser: true
+  jquery: true
+extends: 'eslint:recommended'
+rules:
+  indent:
+    - error
+    - 2
+  linebreak-style:
+    - error
+    - unix
+  quotes:
+    - error
+    - single
+  semi:
+    - error
+    - always
diff --git a/plugins/additionals/rubocop.yml b/plugins/additionals/rubocop.yml
new file mode 100644
index 0000000..7fcb391
--- /dev/null
+++ b/plugins/additionals/rubocop.yml
@@ -0,0 +1,49 @@
+Rails:
+  Enabled: true
+
+AllCops:
+  TargetRubyVersion: 2.2
+  TargetRailsVersion: 5.2
+
+Metrics/AbcSize:
+  Max: 65
+
+Metrics/BlockLength:
+  Max: 60
+
+Metrics/ClassLength:
+  Enabled: false
+
+Metrics/CyclomaticComplexity:
+  Max: 20
+
+Metrics/LineLength:
+  Max: 140
+
+Metrics/MethodLength:
+  Max: 60
+
+Metrics/ModuleLength:
+  Enabled: false
+
+Metrics/PerceivedComplexity:
+  Max: 25
+
+Rails/SkipsModelValidations:
+  Enabled: false
+
+Rails/CreateTableWithTimestamps:
+  Enabled: false
+
+# app/model/application_record.rb is missing in redmine, we can't use ApplicationRecord
+Rails/ApplicationRecord:
+  Enabled: false
+
+Style/AutoResourceCleanup:
+  Enabled: true
+
+Style/Documentation:
+  Enabled: false
+
+Style/ExpandPathArguments:
+  Enabled: false
diff --git a/plugins/additionals/slim-lint.yml b/plugins/additionals/slim-lint.yml
new file mode 100644
index 0000000..aea15c3
--- /dev/null
+++ b/plugins/additionals/slim-lint.yml
@@ -0,0 +1,39 @@
+linters:
+  LineLength:
+    max: 140
+  RuboCop:
+    ignored_cops:
+      - Layout/AlignArray
+      - Layout/AlignHash
+      - Layout/AlignParameters
+      - Layout/BlockEndNewline
+      - Layout/EmptyLineAfterGuardClause
+      - Layout/FirstParameterIndentation
+      - Layout/IndentArray
+      - Layout/IndentationConsistency
+      - Layout/IndentationWidth
+      - Layout/IndentHash
+      - Layout/MultilineArrayBraceLayout
+      - Layout/MultilineAssignmentLayout
+      - Layout/MultilineBlockLayout
+      - Layout/MultilineHashBraceLayout
+      - Layout/MultilineMethodCallBraceLayout
+      - Layout/MultilineMethodCallIndentation
+      - Layout/MultilineMethodDefinitionBraceLayout
+      - Layout/MultilineOperationIndentation
+      - Layout/TrailingBlankLines
+      - Layout/TrailingWhitespace
+      - Lint/BlockAlignment
+      - Lint/EndAlignment
+      - Lint/Void
+      - Metrics/BlockLength
+      - Metrics/BlockNesting
+      - Metrics/LineLength
+      - Naming/FileName
+      - Rails/OutputSafety
+      - Style/ConditionalAssignment
+      - Style/FrozenStringLiteralComment
+      - Style/IdenticalConditionalBranches
+      - Style/IfUnlessModifier
+      - Style/Next
+      - Style/WhileUntilModifier
diff --git a/plugins/additionals/travis.yml b/plugins/additionals/travis.yml
new file mode 100644
index 0000000..7c7aa27
--- /dev/null
+++ b/plugins/additionals/travis.yml
@@ -0,0 +1,49 @@
+language: ruby
+
+rvm:
+  - 2.5.3
+  - 2.4.5
+  - 2.3.8
+
+env:
+  - REDMINE_VER=4.0-stable DB=postgresql
+  - REDMINE_VER=3.4-stable DB=postgresql
+  - REDMINE_VER=4.0-stable DB=mysql
+  - REDMINE_VER=3.4-stable DB=mysql
+
+sudo: true
+
+addons:
+  postgresql: "9.6"
+  apt:
+    sources:
+      - mysql-5.7-trusty
+    packages:
+      - mysql-server
+      - mysql-client
+
+before_install:
+  - export PLUGIN_NAME=additionals
+  - export REDMINE_GIT_REPO=git://github.com/redmine/redmine.git
+  - export REDMINE_PATH=$HOME/redmine
+  - export BUNDLE_GEMFILE=$REDMINE_PATH/Gemfile
+  - export RAILS_ENV=test
+  - git clone $REDMINE_GIT_REPO $REDMINE_PATH
+  - cd $REDMINE_PATH
+  - if [[ "$REDMINE_VER" != "master" ]]; then git checkout -b $REDMINE_VER origin/$REDMINE_VER; fi
+  - ln -s $TRAVIS_BUILD_DIR $REDMINE_PATH/plugins/$PLUGIN_NAME
+  - cp $TRAVIS_BUILD_DIR/test/support/additional_environment.rb $REDMINE_PATH/config/
+  - cp $TRAVIS_BUILD_DIR/test/support/database-$DB-travis.yml $REDMINE_PATH/config/database.yml
+
+before_script:
+  - if [[ "$DB" == "mysql" ]]; then mysql -e "use mysql; update user set authentication_string=PASSWORD('travis_ci_test') where User='root'; update user set plugin='mysql_native_password';FLUSH PRIVILEGES;"; fi
+  - if [[ "$DB" == "mysql" ]]; then mysql_upgrade -ptravis_ci_test; fi
+  - if [[ "$DB" == "mysql" ]]; then service mysql restart; fi
+  - bundle exec rake db:create db:migrate redmine:plugins:migrate
+
+script:
+  - export SKIP_COVERAGE=1
+  - if [[ "$REDMINE_VER" == "master" ]]; then bundle exec rake redmine:plugins:test:units NAME=$PLUGIN_NAME; fi
+  - if [[ "$REDMINE_VER" == "master" ]]; then bundle exec rake redmine:plugins:test:functionals NAME=$PLUGIN_NAME; fi
+  - if [[ "$REDMINE_VER" == "master" ]]; then bundle exec rake redmine:plugins:test:integration NAME=$PLUGIN_NAME; fi
+  - if [[ "$REDMINE_VER" != "master" ]]; then bundle exec rake redmine:plugins:test NAME=$PLUGIN_NAME RUBYOPT="-W0"; fi