add bourbon and neat modules, enhance login and signup forms
add partial _form_header.html
this is a merge of the upstream/master
Merge pull request #23 from HammamSamara/add-bourbon-and-neat

add bourbon and neat modules, enhance login and signup forms
add generated moudles for deployment
Merge pull request #24 from HammamSamara/add-bourbon-and-neat

Built web-client for deployment.
Add web-client/dist to .gitignore and remove dist/ from the repo. And implement a smarter deploy to heroku from Travis.
Merge pull request #25 from manshar/better-deploy-flow

Add web-client/dist to .gitignore and remove dist/ from the repo.
Installing sass gem before building web-client.
Merge branch 'master' into images-for-user-and-article
Merge pull request #26 from manshar/fix-web-client-build

Installing sass gem before building web-client.
Merge branch 'master' of github.com:manshar/manshar into images-for-user-and-article
Added ability to upload user avatar and article cover to web-client with custom service to handle files with previews.