configuration variables shouldn't be able to have spaces

[cfrank]

When you have a configuration like this:

$test 24

example = $test

You get the following error:

[NATWM:ERROR] - 'test' is not defined - Line: 3
[NATWM:ERROR] - Failed to save 'test 24

example' - Line 3 Col: 9
[NATWM:ERROR] - Error reading configuration file!

While this does error out and not save - the error messages are horrible and it appears that there are no checks for \n when parsing variable names - it is just running out the buffer.

We need to fail if a variable appears without a EQUAL char and also not run out the buffer when parsing variable names