Since IDEA 14 (2014), IDEA and other contemporaneous JebBrains IDEs don't store sensitive info in `datasources.xml` and it makes sense to version control to share project data sources among the team. `dataSources.local.xml` is user-specific: contain usernames and could be sensitive from a security perspective, albeit passwords could be externalized to e.g. Mac Keychain.

References: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839, https://youtrack.jetbrains.com/issue/IDEA-127105

On line 1, WebStorm is capitalized the same way as the other IDE names.

**Reasons for making this change:**

The file `replstate.xml` contains the history of the Clojure REPL
that Cursive adds to IntelliJ. Obviously that's user-specific,
and not relevant to other users.

**Links to documentation supporting these rule changes:**

This file is not well-documented, but in cursive-ide/cursive#1325,
the Cursive developers state that this is the REPL history file,
and that deleting it is acceptable troubleshooting if it's
causing trouble.

In newer versions of the IntelliJ platform (such as the one used for Rider), the .idea files are now placed in a subdirectory of the same, named after the current project (such as ".idea/.idea.Everlook/.idea/workspace.xml"). Adding a double-star pattern to these folder rules will also ignore these new files and maintain backwards compatibility with previous revisions of this file.

Added datasource folder

Official docs, found here:
https://intellij-support.jetbrains.com/hc/en-us/articles/206544839 (as
of 13 Aug 2016)

These files differ on Windows and OS X.

Added a forgotten IDE to the .gitignore documentation.

Why?
For completeness and correctness

What?
[Webstorm](https://www.jetbrains.com/webstorm).

Since that is what it should be called now a days according to https://dev.twitter.com/fabric/android/integrating

which make it easier to find in search

JetBrains recently released a new C/C++ IDE: CLion

Intellij's iml file can be anywhere on the path.
This is true for multi-module maven project where each module has its own $projectName.iml file in its own directory.

These are relatively new, the crashlytics.properties file contains the secret and can [alternatively](https://plus.google.com/+AntonioBertucci/posts/S9krjvXfgfm) contain the apikey to rid your repo of the extra strings file.

Amends #1165

guess that root iml needs to be ignored and others need to be shared

removed the iml filter - this is my current best understanding of the docs, but I'm still unsure

To clarify when to ignore/include *.imls as per https://intellij-support.jetbrains.com/entries/23393067

also added optionals from the same

Fixes #1090 - this is the part of that PR that seems justified.

* Remove AndroidStudio.gitignore in favor of adding the
  change needed to the Global/JetBrains.gitignore file

Add plugin file description for JIRA config file containing username and password