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

add /target/ (generated by Cargo) to Rust gitignore

LabVIEW.gitignore

Ignore QtCreator qmlproject user-specific files

Clarify what commenting *.pubxml does

user passwords are stored in *.user files so it is only database connection strings that are not protected.

https://github.com/github/gitignore/commit/08def965cd1c0241a7cffbe7c26a74b3cab61243 incorrect states that commenting *.pubxml will keep your passwords hidden when it will actually do the opposite. This clarifies what commenting *.pubxml does and warns you of the dangers.

Amends #1084

Amends #1131
See these resources for explanation:
  http://docs.nuget.org/docs/reference/package-restore
  http://docs.nuget.org/docs/workflows/using-nuget-without-committing-packages

This reverts commit 5b168d43.

Amends #1131 - fixes Umbraco template to compensate for the change in the
VisualStudio template which would lead to issues if the two were used together.
These rules were originally added by @bbodenmiller in #1013

Removed the separate top-level patterns for NuGet in accordance with comments in PR. Will now match version 2.0.1.

Fixed pattern for excluding nuget packages so that it works both for top level package folder and for any lower level package folders.  Re-include patterns fixed the same way.

elisp: adding .cask files to gitignore

Update C.gitignore: Added .la and .lo library extensions from GNU libtool

Added .la and .lo library extensions

(TeX) Exclude files generated by morewrites

To overcome the "No room for a new \write", the morewrites package (http://www.ctan.org/pkg/morewrites) uses a file with the .mw extension

LabVIEW (ni.com/labview) is a graphical system design tool.
File extensions are listed here:
http://zone.ni.com/reference/en-XX/help/371361K-01/lvhowto/lv_file_extensions/
.llb and lvlibp are for binary distributions, and are excluded for the same reason shared objects are excluded.
.aliases and .lvlps are metadata related to the project file, and are automatically updated when moving between machines (see note on that help page).

Added Zephir language gitignore

Must ignore x86 directory as well

sort WordPress.gitignore

Ignoring PyBuilder's target directory

PyInstaller .manifest

Space after comment in Android.gitignore

When installing SQLite embebed on my C# project I've noted that it generates both directories,
`x86` and `x64` but only `x64` was present on `.gitignore`.

Update Unity.gitignore to ignore sysinfo crash log

Sysinfo.txt is generated by unity if occurs any crashes. The content consist of  users system information, running process etc. I don't think that should be shared with others.

Amends #976