ASP.NET Core projects no longer use Bower by default (since Bower is now deprecated), and instead create static files in the wwwroot/lib path.  This path is can also be used by convention for ASP.NET Core developers, and since it's no longer populated by Bower, it is unituitive to be excluded by default.

This change removes the lines added by #2307.

**Reasons for making this change:**

VS default flow is now broken by excluding files required to run an ASP.NET Core project.

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

The changes to the ASP.NET Core templates was tracked by https://github.com/aspnet/templating/issues/48.

Added some files that SCons generates when its tries to configure libraries.

* Add more standard ignored files for Julia

In particular, this adds documentation build artifacts generated by Documenter.jl as well as Manifest.toml, which can appear in docs/, in test/, or at the top level.

* Clarify the intent of each ignored item

Also add a few more build artifacts from BinaryProvider/BinDeps.

https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/
Rails `5.2.2.1` requires `tmp` directory committed to git repository for CI to run successfully.

Visual Studio can also generate .appxbundle and .appxupload files for Windows Store apps.
See: https://docs.microsoft.com/en-us/windows/uwp/packaging/packaging-uwp-apps#types-of-app-packages

Lerna is an increasingly popular tool within node ecosystem to manage package dependencies and having writes to a `lerna-debug.log` following the yarn and npm precedence when error is encoutered.

* Update VisualStudio.gitignore file

Rider has its own ignore file, so does Visual Studio. The ignore statements for Rider (idea) IDE should be removed from Visual Studio .gitignore file template.

* Add ignore rules for Pipenv

Pipenv uses Pipfile.lock to maintain Python package information
(metadata, hash, etc.) installed as described in Pipfile. Thus,
Pipfile.lock may vary on different operating systems, platforms
when collaborating. This PR adds Pipfile.lock into the Python
default gitignore. See http://pipenv.org

* Update Python.gitignore

Not to ignore Pipfile.lock in default, but explain
when and why it should be ignored in case of
collaboration. (adjusted according to comment
in github/gitignore#2977 by @drothmaler )

* Apply suggestions from code review
Co-Authored-By: NJarryShaw <jarryshaw@icloud.com>

* Update Python.gitignore

As suggested by @shiftkey , elaborate on the problems that users might see with `Pipfile.lock`.

* [Node] Ignore diagnostic report files

* Add documentation URL

* Stricter regex

R: ignore user-specific files

Migration backup

Merged down master github gitignore

Update VisualStudio.gitignore

Ignore backup files from editing reports

Add *.creator.user* files to the Qt .gitignore

[Codesniffer] remove duplicate Composer rule

Remove trailing whitespace added last commit.

Android.gitignore: Add build_file_checksums.ser and modules.xml files

Add compilation db to Qt gitignore

Add pip-wheel-metadata to Python.gitignore

PEP-517 has resulted in some updates to the Python
build process. As a result, a new directory called
pip-wheel-metadata is created on fresh builds.
This PR adds this directory into the Python default
gitignore. See
https://github.com/pypa/pip/blob/e5f4bbb7ddff87f48f2b5815513e4211ccdde83a/src/pip/_internal/req/req_install.py#L568

Ignore CMake FetchContent directory

CMake's `FetchContent` module creates a `_deps` directory on the root (configurable by modifying `FETCHCONTENT_BASE_DIR`)

Unity: Never ignore asset meta data