Added randomize items preference
Added "randomize items" title for setting
Added "randomize items" setting
Added "randomize items" function

This will randomize the items' order. At launch it will have some trouble, until a couple of feeds have been added.
Allow for dynamic application of the randomization preference.
Removing unused entities.
Support for limiting the width of ticker items.

Closes #76.
E-mail address change.
Merge pull request #1 from cfinke/master

RSS-Ticker sync with original master branch