Add 'make lint', restructure 'compliance' pipeline (#10861)

- Added 'lint', 'lint-frontend', 'lint-backend' targets
- Added 'lint-frontend', 'lint-backend' ci steps and restructure the
  'compliance' pipeline to have a clear separation between frontend and
  backend and use parallelism where possible. Also, the main build
  pipelines now depend on 'compliance' so they will skip if it fails.
- Added dependencies on ci steps so they skip when 'compliance' fails
- Moved JS linters to devDependencies
- Removed deprecated 'js' and 'css' targets

.drone.yml

   path: src/code.gitea.io/gitea
 
 steps:
-  - name: pre-build
+  - name: deps-frontend
+    pull: always
+    image: node:12
+    commands:
+      - make node_modules
+
+  - name: lint-frontend
+    pull: always
+    image: node:12
+    commands:
+      - make lint-frontend
+    depends_on: [deps-frontend]
+
+  - name: lint-backend
+    pull: always
+    image: golang:1.14
+    commands:
+      - make lint-backend
+    environment:
+      GOPROXY: https://goproxy.cn # proxy.golang.org is blocked in China, this proxy is not
+      GOSUMDB: sum.golang.org
+      TAGS: bindata sqlite sqlite_unlock_notify
+
+  - name: build-frontend
     pull: always
     image: node:10 # this step is kept at the lowest version of node that we support
     commands:
-      - make webpack
+      - make frontend
+    depends_on: [lint-frontend]
 
-  - name: build-without-gcc
+  - name: build-backend-no-gcc
     pull: always
     image: golang:1.12 # this step is kept as the lowest version of golang that we support
     environment:
       GOPROXY: off
     commands:
       - go build -mod=vendor -o gitea_no_gcc # test if build succeeds without the sqlite tag
+    depends_on: [lint-backend]
 
-  - name: build-linux-386
+  - name: build-backend-386
     pull: always
     image: golang:1.14
     environment:
       GOARCH: 386
     commands:
       - go build -mod=vendor -o gitea_linux_386 # test if compatible with 32 bit
-
-  - name: check
-    pull: always
-    image: golang:1.14
-    commands:
-      - make clean golangci-lint revive swagger-check swagger-validate test-vendor
-    environment:
-      GOPROXY: https://goproxy.cn # proxy.golang.org is blocked in China, this proxy is not
-      GOSUMDB: sum.golang.org
-      TAGS: bindata sqlite sqlite_unlock_notify
+    depends_on: [lint-backend]
 
 ---
 kind: pipeline
   os: linux
   arch: amd64
 
+depends_on:
+  - compliance
+
 workspace:
   base: /go
   path: src/code.gitea.io/gitea
         - push
         - pull_request
 
-
-
 ---
 kind: pipeline
 name: testing-arm64
   os: linux
   arch: arm64
 
+depends_on:
+  - compliance
+
 workspace:
   base: /go
   path: src/code.gitea.io/gitea
   os: linux
   arch: arm64
 
+depends_on:
+  - compliance
+
 steps:
   - name: build-docs
     pull: always

Makefile

 GO_PACKAGES ?= $(filter-out code.gitea.io/gitea/integrations/migration-test,$(filter-out code.gitea.io/gitea/integrations,$(shell GO111MODULE=on $(GO) list -mod=vendor ./... | grep -v /vendor/)))
 
 WEBPACK_SOURCES := $(shell find web_src/js web_src/less -type f)
-WEBPACK_CONFIGS := webpack.config.js .eslintrc .stylelintrc
+WEBPACK_CONFIGS := webpack.config.js
 WEBPACK_DEST := public/js/index.js public/css/index.css
 WEBPACK_DEST_DIRS := public/js public/css
 
 	@echo " - backend           build backend files"
 	@echo " - clean             delete backend and integration files"
 	@echo " - clean-all         delete backend, frontend and integration files"
+	@echo " - lint              lint everything"
+	@echo " - lint-frontend     lint frontend files"
+	@echo " - lint-backend      lint backend files"
 	@echo " - webpack           build webpack files"
 	@echo " - fomantic          build fomantic files"
 	@echo " - generate          run \"go generate\""
 	@echo " - fmt               format the Go code"
 	@echo " - generate-swagger  generate the swagger spec from code comments"
 	@echo " - swagger-validate  check if the swagger spec is valid"
-	@echo " - revive            run code linter revive"
-	@echo " - misspell          check if a word is written wrong"
+	@echo " - golangci-lint     run golangci-lint linter"
+	@echo " - revive            run revive linter"
+	@echo " - misspell          check for misspellings"
 	@echo " - vet               examines Go source code and reports suspicious constructs"
 	@echo " - test              run unit test"
 	@echo " - test-sqlite       run integration test for sqlite"
 		exit 1; \
 	fi;
 
+.PHONY: lint
+lint: lint-backend lint-frontend
+
+.PHONY: lint-backend
+lint-backend: golangci-lint revive swagger-check swagger-validate test-vendor
+
+.PHONY: lint-frontend
+lint-frontend: node_modules
+	npx eslint web_src/js webpack.config.js
+	npx stylelint web_src/less
+
 .PHONY: test
 test:
 	GO111MODULE=on $(GO) test $(GOTESTFLAGS) -mod=vendor -tags='sqlite sqlite_unlock_notify' $(GO_PACKAGES)
 	rm -rf node_modules package-lock.json
 	npm install --package-lock
 
-.PHONY: js
-js:
-	@echo "'make js' is deprecated, please use 'make webpack'"
-	$(MAKE) webpack
-
-.PHONY: css
-css:
-	@echo "'make css' is deprecated, please use 'make webpack'"
-	$(MAKE) webpack
-
 .PHONY: fomantic
 fomantic: $(FOMANTIC_DEST)
 
 webpack: $(WEBPACK_DEST)
 
 $(WEBPACK_DEST): $(WEBPACK_SOURCES) $(WEBPACK_CONFIGS) package-lock.json | node_modules
-	npx eslint web_src/js webpack.config.js
-	npx stylelint web_src/less
 	npx webpack --hide-modules --display-entrypoints=false
 	@touch $(WEBPACK_DEST)
 

package.json

     "css-loader": "3.4.2",
     "cssnano": "4.1.10",
     "dropzone": "5.7.0",
-    "eslint": "6.8.0",
-    "eslint-config-airbnb-base": "14.1.0",
-    "eslint-plugin-import": "2.20.1",
     "fast-glob": "3.2.2",
     "fomantic-ui": "2.8.4",
     "highlight.js": "9.18.1",
     "postcss-loader": "3.0.0",
     "postcss-preset-env": "6.7.0",
     "postcss-safe-parser": "4.0.2",
-    "stylelint": "13.2.1",
-    "stylelint-config-standard": "20.0.0",
     "svg-sprite-loader": "4.2.1",
     "svgo": "1.3.2",
     "svgo-loader": "2.2.1",
     "webpack-fix-style-only-entries": "0.4.0"
   },
   "devDependencies": {
+    "eslint": "6.8.0",
+    "eslint-config-airbnb-base": "14.1.0",
+    "eslint-plugin-import": "2.20.1",
+    "stylelint": "13.2.1",
+    "stylelint-config-standard": "20.0.0",
     "updates": "10.2.4"
   },
   "browserslist": [