Adds .gitignore rules for AxoCover

AxoCover is a Code Coverage Tool. It creates a **.axoCover** folder where are created:
- settings in settings.json
- sub-folders into **run** folder which contain code coverage results.

All content into **.axoCover** folder must be ignored except the **settings.json** file.

Fix comments on same line causing ignore to break

Symfony.gitignore: add web server pid file

Since Symfony 3.3, WebServerBundle creates a `.web-server-pid` file when embedded server is running.
Official blog post: http://symfony.com/blog/new-in-symfony-3-3-webserverbundle

Remove TODO from VS.gitignore

Updated Smalltalk.gitignore

JetBrains: out/ ignored recursively

fix Prestashop.gitignore error

Ignore .ghc.environment.*

Add Tabs Studio files to VisualStudio.gitignore

Adds BenchmarkDotNet.Artifacts to VisualStudio.gitignore

Optionally add log files to Vagrant and improve file's comments

Fix capitalization and spacing of comments

Create .gitignore rules for JEnv

Qt unit tests

Consolidate all environments in one section

Some of these names relate to specific tools, others could be used by multiple tools. In particular, virtualenv, the most popular tool for creating Python environments, does not mandate any of these and venv/ or .venv are simply conventional. It is more readable to group all of these together.

For template rules (modern style) in Qt project file,
this file is autogenerated by qmake.

Example old style (pro file):
SOURCES += src/1.cpp \
           src/2.cpp

Example new style, uses template rules (pro file):
SOURCES += src/*.cpp

qmake auto generate files with list of objects
object_script.*.Debug
object_script.*.Release

This file is autogenerated by qmake for run auto(unit) tests.
For Windows: target_wrapper.bat
For Unix: target_wrapper.sh

add *_plugin_import.cpp to Qt.gitignore

This file is autogenerated by qmake. It imports static plugin classes for
static plugins specified using QTPLUGIN and QT_PLUGIN_CLASS.<plugin> variables.

This file is autogenerated for static build

add .appx to VisualStudio.gitignore

this commit is optional, for good-looking

ensure the following ! rules are included