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

* Update Unity.gitignore

Prevents directories: `Library`
`Temp`
`Obj`
`Build`
`Builds`
`Assets/AssetStoreTools`
from being included in the remote if the project sits in the `Assets` folder.

* removed wildcards from Unity's .gitignore

Prevents directories: `Library`
`Temp`
`Obj`
`Build`
`Builds`
`Assets/AssetStoreTools`
from being included in the remote if the project sits in the `Assets` folder.