Add Laravel to LibreNMS (librenms#8318)

* Add Laravel to LibreNMS.

* Try to set permissions during initial install and first composer update to Laravel.

* Fix composer.lock
Fix missing db config keys

* Start building v1 layout
Port ajax_setresolution, inject csrf into jquery ajax calls
Layout works, building menu
Partially done.

* Fix device group list
remove stupid count relationships

* Print messages for common boot errors.
Don't log to laravel.log file.
Log to error_log until booted, then librenms.log

* Fix up some issues with Config loading
Start of custom directives

* Custom blade directives: config, notconfig, admin

* Preflight checks
Only load config files once.

* Update the composer.lock for php 5.6

* Menu through routing

* Start of alert menu

* Better alert scopes

* reduce cruft in models

* Alerting menu more or less working :D

* Fix style

* Improved preflight

* Fix chicken-eggs!

* Remove examples

* Better alert_rule status queries
Debugbar

* fix app.env check

* User Menu

* Settings bar (dropped refresh)
Search JS

* Toastr messages

* Rename preflight

* Use hasAccess(User) on most models.
Add port counts

* Missed a Preflight -> Checks rename

* Fix some formatting

* Boot Eloquent outside of Laravel
Use Eloquent for Config and Plugins so we don't have to connect with dbFacile inside Laravel.
Move locate_binary() into Config class

* Config WIP

* Try to fix a lot of config loading issues.

* Improve menu for non-admins removing unneeded menus
url() for all in menu

* Only use eloquent if it exists

* Include APP_URL in initial .env settings

* Implement Legacy User Provider

* Helper class for using Eloquent outside of Laravel.
Allows access to DB style queries too and checking the connection status.

* Fix up tests

* Fix device groups query

* Checking Travis

* copy config.test.php earlier

* dbFacile check config before connecting
Don't use exception to check if eloquent is connected, it gets grabbed by the exception handler.
Ignore missing config.php error.

* Fix config load with database is not migrated yet.

* Remove Config::load() from early boot.

* Use laravel config settings to init db (this prefers .env settings)
Fix bgp vars not set in menu
add _ide_helper.php to .gitignore

* Restrict dependencies to versions that support php 5.6

* Update ConfigTest

* Fix a couple of installation issues

* Add unique NODE_ID to .env

* Correct handling of title image

* Fix database config not loading. Thanks @laf

* Don't prepend /

* add class_exists checks for development service providers

* Fix config value casting

* Don't use functions that may not exist

* Update dbFacile.php

* d_echo may not be defined when Config used called.

* Add SELinux configuration steps
More detailed permissions check.
Check all and give complete corrective commands in one step.

* Ignore node_modules directory

* Re-add accidetal removal

Author: murrant

.env.example

@@ -0,0 +1,8 @@
+APP_KEY=
+
+#DB_HOST=
+#DB_DATABASE=
+#DB_USERNAME=
+#DB_PASSWORD=
+
+#APP_URL=

.gitignore

@@ -9,6 +9,7 @@
 !/.github/
 !/.codeclimate.yml
 !/.mention-bot
+!/.env.example
 
 # Others #
 ##########
@@ -25,7 +26,9 @@ nbproject
 patches
 !/lib/yaml
 /vendor
+/node_modules
 composer.phar
+_ide_helper.php
 
 # Docs #
 ########