new Util {}; new addCss(); modified KO-alert

+ new subnamespace TWDB.Util for future helpers
+ new function addCss in this SNS for adding CSS definitions to the
document's head

* modified the blinking alert of the KO timer to a lower frequency,
klicking it stops the animation immediately (animation queue could have
been created when the tab was minimized)
market sell dialog: tiny enhancemnets

+ added icons to the rights DDL so you can identify the current setting
at first glance
+ add number of similar offers to its caption; hide the table if there
are none, otherwise make the table toggleable by clicking on the caption
Merge pull request #4 from petee-d/market-sell-dialog-enhance2

Market sell dialog enhance2