Remove typings ignore

Nobody is using v1 of typings anymore on new projects and 'typings' is the recommended name for the folders of your custom types.
On the other hand the official Visual Studio ignore is not ignoring this folder.

Qt: typo fix and extra empty lines removal

Exclude secret deployment key in rsconnect/

Exclude secret deployment key in rsconnect/, see https://shiny.rstudio.com/articles/shinyapps.html for details.

.idea/**/datasources.xml is now safe to store

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

Fixes  WebStorm capitalization in comment

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

Add ignore '.pytest_cache' directory in Unit test section

Added ignore for files created by `catkin_make_isolated`

Added "ServiceFabricBackup/"

Add `.dart_tool/`

Followup to https://github.com/dart-lang/site-www/issues/444#issuecomment-346560788

The latest update of Visual Studio 17 (15.5.5) introduces a new backup folder called "ServiceFabricBackup" before upgrading service fabric applications.

Simply execute `catkin_make_isolated` and `build` and `devel` will have different names, but should be ignored as well.

Update TeX.gitignore

Added a temporary file used in MacTeX

Update Android.gitignore

Add fastlane in Android gitignore

Fixed the unignore of folder 'packages'

Considering the VisualStudio gitignore file contains a line "**/[Pp]ackages/*", these 2 lines from Umbraco gitignore never get applied properly to the desired files, even though Umbraco lines were added after the VS lines. I guess the VS's line is more specific, so it gets a priority of some sort.

Update Node.gitignore

Go: Add '*.exe~' to .gitignore

When you build a Go executable, which does already exists and is in use on Windows (e.g. running) then the output binary name will be extended by a '~' prefix.
https://github.com/golang/go/blob/558eeb2d850d064b0b02b65a7bf3af6c108c248d/src/cmd/go/internal/work/exec.go#L1165-L1170

* Update Eclipse.gitignore

* Update Eclipse.gitignore

* Add *.snk strong name key files

Strong name key files shouldn't be included in a repository AFAIK. they are intended to sign build output to verify that it comes from the correct publisher. having an *.snk in a repository would allow anyone to produce build as if they were the original publisher.

I guess some OSS projects might like to have *.snk files in their repos but that would be an exception to the rule.

* Make use of *.snk optional

Add note explaining use.

* Reduce explanation

Just use a link instead

https://codex.wordpress.org/Must_Use_Plugins

Added extensions for prepackaged app and toolbox file, pregenerated helpsearch folders.

Rails 5 uses npm to handle javascript dependancies, node_modules should not be checked in to git.

The out of date models flag is automatically generated by the system, we don't want this in Git

ref http://msbuildlog.com/

Add .jekyll-cache/ as per envygeeks/jekyll-assets