Handling some file paths when there is a space in it

[clebersa]

Description

I made llum able to deal with paths that contain spaces. My changes can be summarized as bellow:

• I replaced the " " (space character) for "\ " in the function passthru in some PHP files for the paths; and
• I added double quotes to the bash scripts that deals with paths in order to deal with them correctly.

Motivation and context

Users that have llum installed in a folder that has a space in the full path could not run llum because it was generating errors as the path is "broken" because of the space. This issue was opened at https://github.com/acacha/adminlte-laravel/issues/225. A pull request for AdminLTE Laravel Installer is proposed as part of the solution for the problem: https://github.com/acacha/adminlte-laravel-installer/pull/13.

How has this been tested?

This is what I did:

1. I created a virtual machine with Ubuntu 16.04 using vagrant and created an user with the home folder /home/cleber alcantara/.
2. I installed composer, laravel and adminlte-installer.
3. I created a laravel project and tried to run adminlte-laravel install. This last command generated the errors described in the issue mentioned in the previous section.
4. I edited the files in the /home/cleber alcantara/.composer/vendor/acacha/adminlte-laravel-installer and /home/cleber alcantara/.composer/vendor/acacha/llum in order to fix the problems.
5. I created a project using laravel and ran adminlte-laravel install successfully.
6. I tested the new projects in my browser and they worked as expected.
7. I renamed home directory to /home/cleber and proceeded the same way, creating projects using laravel and running adminlte-laravel install. No errors occurred, which means my changes did not affect the "normal cases" when the paths for llum and adminlte-laravel do not have spaces.

   Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

[acacha]

Thanks!