Merge pull request #491 from m0zes/master

Check the output status of the dot commands
Fix for PDO errors on generic logging function
This shit isn't any faster even though my tests said the sql should be a factor quicker. close #469
Updated formatting and wording on the Overview function.

Worst was an inappropriate word to use as it has a negative connotation - changed to composite.
Removed old PHPExcel installation so that we can have a clean migration on top - at least in the github repository.

#383
Added in PHPExcel 1.8.0.

Fixed #383
Reversion of search results back to a simple list close #347
Added a check for file existence in the export_port_connections.php - previously there were no checks and if an image file didn't exist it would cause a fatal exception.

#467
list children in cabaudit.php

Added list of children of chassis devices to cabinet audit report.
Merge pull request #492 from ThirdMonkey/master

list children in cabaudit.php
A few more changes to cabaudit.php

Added blank row for corrections after blades.
Made PDU plug numbers more readable.
List more then two power connections.
Merge pull request #493 from ThirdMonkey/master

A few more changes to cabaudit.php
Proper child support for the pull request #493.  The row colors aren't alternating but I don't care
Shelves are stupid
Changed wording for slot height and added an additional combobox hook close #471
Adjusting quotes for html consistency and moved the department declaration up a level for nested devices
Stupid shelves, cont. @6181d5a80b
Fixes row color issue
Added config toggle under a new tab.

Also cleaning up db upgrade - don't see how to force a rename in github, so I'll delete the old, commit, and then add in the db-3.2-to-3.3.sql file in the next commit.

Fixes #467