renamed folder php to includes; fixed include pathes
moved folder js into includes folder; updated the path in the code
moved css folder into admin folder; updated the path in the code
moved admin.php to admin folder; updated the path in the code
admin class changes

* changed class name
* make class a singleton
* added init_admin_page function and moved register_pages action to
admin class
renamed admin main page to admin about page; moved page content to seperate class
small fixes in admin page
moved settings to seperate settings page (subpage of Settings)
changes in LinkView class

* changed class name
* changed whitespaces
changes in LV_Options class

* changed class name
* whitespace changes
changes in SC_Linkview class

* change classname
* whitespace changes
changes in LV_Widget class

* changed file name
* changed class name
* whitespace changes
set to absolute pathes in require_once
small changes
updated widget to version with array for items
added css file for admin settings page

also changed the layout and the css option description
updated admin about page and the css file
small css change
some css improvements
removed obsolete tabs variable