Update core git config files, vendor installs for unit testing

Update .gitattributes with more files to ignore
Add .gitignore for php unit test cache
Install dotenv file parser for unit testing
Update current test pages with dotenv file parser (replaces function
call)

Documentation PHPdoc update for checkMe method call

vendor/gullevek/dotenv/Readme.md

@@ -0,0 +1,50 @@
+# dotenv: readEnvFile()
+
+A simple implementation of <https://github.com/vlucas/phpdotenv>
+
+This is not a functional replacement, but a very simple implementation of the basic functions.
+
+It is recommended to create a `.env.example` example file that is checked into the
+repository. The `.env` should *NEVER* be checked into anything
+
+## How to install
+
+`comoser require gullevek/dotEnv`
+
+## How it works
+
+Put the function where it is needed or put it in a file and load it.
+
+if not parameter is given it will use `__DIR__` as base path.
+Second parameter is file name override. Default is `.env`
+
+Data is loaded into _ENV only.
+
+If there is already an entry in _ENV then it will not be overwritten.
+
+## .env file example
+
+A valid entry has to start with an alphanumeric string, underscores are allowed and
+then have an equal sign (=). After the equal sign the data block starts. Data can be
+quoted with double quotes (") and if this is done can stretch over multiple lines.
+The openeing double quote must be on the same lign as the requal sign (=). If double
+quoted (") charcters are used it will read each line until another double quote (")
+character is found. Everything after that is ignored.
+
+Any spaces before the variable or before and after the equal sign (=) are ignored.
+
+Line is read until `PHP_EOL`. So any trailing spaces are read too.
+
+Any line that is not valid is ignored.
+
+```ini
+# this line is ignored
+SOMETHING=A
+OTHER="A B C"
+MULTI_LINE="1 2 3
+4 5 6
+7 8 9" ; and this is ignored
+ESCAPE="String \" inside \" other "
+DOUBLE="I will be used"
+DOUBLE="This will be ignored"
+```