WordPress Coding Standards ( CodeSniffer ) 90% Issues Fixed

I have fixed 90% of the CodeSniffer related issues ( WP standards ) in latest rtPanel ( 4.1.5 )

Please review all the changes before merging the code.

Majority of changes are as described below - 

1) Indentation
2) Spacing
3) Equal sign alignment
4) Multi-line function call standard
5) Escaping ( wherever possible )
6) ! operator spacing ( before and after )
7) Using single quotes instead of double quotes
8) Code formatting ( this still needs improvement though )