Fix #103: numberofcores giving bad output.

A previous change added nproc as a fallback, but nproc's output icnludes
a newline. This removes the newline and prints "unknown" as a last
resort.
Specify full path to nproc.
Merge pull request #133 from gliderShip/master

fixes some bugs on speed.php
Merge pull request #131 from afaqurk/nproc

Clean up numberofcores' output
Remove tabs, consistent indentation.
Merge pull request #136 from qrz/master

Remove tabs, consistent indentation.
added initial version of Widget Hide/unhide functionality
Changed Title and meta tags to be consistent
Added bandwidth (TX/RX) widget
add Ping widget
fix path
Merge pull request #137 from arnaudbey/ping

add Ping widget
Rearranged widgets; Network related widgets are together now; added pagination to software widget
Fix #132: where doesn't search */sbin directories.
Merge pull request #138 from afaqurk/where-path

Fix #132: where doesn't search */sbin directories.
add localstored feature
Merge pull request #139 from arnaudbey/cookies

add localstored feature
TidyHTML !
minor fix
Merge pull request #140 from arnaudbey/html-clean

TidyHTML