Upgrade to webpack 4 and use react-scripts over custom configs

.env

@@ -1,7 +1,6 @@
 #this is the base config, do NOT edit this with your local changes. do that in .env.local, which shouldn't be tracked by git
-PUBLIC_URL=https://boilermake.org
-BM_REACT_APP_API_BASE_URL=https://api.stage.boilermake.org/v1
-BM_REACT_APP_GOOGLE_ANALYTICS_ID=UA-00000000-1
-BM_REACT_APP_DEBUG_MODE=true
-BM_REACT_APP_GITHUB_CLIENT_ID=
-BM_REACT_APP_ALLOW_SIGNUPS=false
+REACT_APP_API_BASE_URL=https://api.stage.boilermake.org/v1
+REACT_APP_GOOGLE_ANALYTICS_ID=UA-00000000-1
+REACT_APP_DEBUG_MODE=true
+REACT_APP_GITHUB_CLIENT_ID=
+REACT_APP_ALLOW_SIGNUPS=false

.env.development

@@ -0,0 +1,6 @@
+#this is the base config, do NOT edit this with your local changes. do that in .env.local, which shouldn't be tracked by git
+REACT_APP_API_BASE_URL=https://api.stage.boilermake.org/v1
+REACT_APP_GOOGLE_ANALYTICS_ID=UA-00000000-1
+REACT_APP_DEBUG_MODE=true
+REACT_APP_GITHUB_CLIENT_ID=
+REACT_APP_ALLOW_SIGNUPS=false

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 cache: yarn
 node_js:
-- 6
+- 10
 install:
 - pip install --user awscli
 - yarn
@@ -31,4 +31,4 @@ after_deploy:
   # Allow `awscli` to make requests to CloudFront.
   - aws configure set preview.cloudfront true
   # Invalidate every object in the targeted distribution.
-  - aws cloudfront create-invalidation --distribution-id $CLOUDFRONT_DISTRIBUTION_ID --paths "/*"
+  - aws cloudfront create-invalidation --distribution-id $CLOUDFRONT_DISTRIBUTION_ID --paths "/*"