Add extended DVI (XDV) to TeX.gitignore

Updates Elixir gitignore file

Added link to source

Update Terraform.gitignore - ignore terraform.tfvars

.DS_Store is a file name, not an extension

Adds some files

Node - update Compiled binary addons link to https

Node.gitignore build/Release Compiled binary addons: http to https
https://nodejs.org/api/addons.html

Nanoc: Ignore tmp/nanoc/, not tmp/

Updating Swift.gitignore with Package.resolved

Add default file, README in libraries and translations in Drupal

Add QML and JS cache files to Qt.gitignore

Add gitignore for Kotlin

'*.tfstate.*.backup' added to Terraform.gitignore

Adds .gitignore rules for AxoCover

AxoCover is a Code Coverage Tool. It creates a **.axoCover** folder where are created:
- settings in settings.json
- sub-folders into **run** folder which contain code coverage results.

All content into **.axoCover** folder must be ignored except the **settings.json** file.

Fix comments on same line causing ignore to break

Symfony.gitignore: add web server pid file

Since Symfony 3.3, WebServerBundle creates a `.web-server-pid` file when embedded server is running.
Official blog post: http://symfony.com/blog/new-in-symfony-3-3-webserverbundle

Remove TODO from VS.gitignore

Updated Smalltalk.gitignore

JetBrains: out/ ignored recursively

fix Prestashop.gitignore error

Ignore .ghc.environment.*

Added .tfvars file so for example AWS credentials aren't committed.

Official `elixir`'s `gitignore` after running `mix new` contains these two lines:

> # Where 3rd-party dependencies like ExDoc output generated docs.
> /doc
> # Ignore .fetch files in case you like to edit your project deps locally.
> /.fetch

They are missing at the moment.