Language articles

This PR is in progress. It will close #11.

## Tasks
- [ ] Cleanup commits after edits are finished

## Articles
- [ ] languages/ada
- [ ] languages/c
- [ ] languages/coffee
- [ ] languages/cpp
- [ ] languages/cs
- [ ] languages/css
- [ ] languages/delphi
- [ ] languages/fortran
- [ ] languages/html
- [ ] languages/java
- [ ] languages/js
- [ ] languages/pascal
- [ ] languages/php
- [ ] languages/py
- [ ] languages/rb
- [ ] languages/sql
- [ ] languages/vb