Update to allow clean entry of Whitelist Items

Whitelist entries were failing unless containing a delim char front and back of the entry. Quick patch to allow names to be entered regularly with no padding. There may be other dependencies which this breaks but I wasn't able to find any as entry and exclusion from NIDS sigs and plain text attribute lists works as expected. 

Feel free to deny this request if this isn't desired functionality but I wanted to submit something cleaner and easier for you guys than an email to @deresz 

Screenshot 1/2: Pre Patch input fail and required delims

![screen shot 2013-12-16 at 9 50 20 am](https://f.cloud.github.com/assets/2313682/1755535/529302de-6666-11e3-9876-8ad486982828.png)
![screen shot 2013-12-16 at 9 55 39 am](https://f.cloud.github.com/assets/2313682/1755537/57843754-6666-11e3-8acf-d3d095913407.png)


Screenshot 3: Post patch success input and whitelisting 

![screen shot 2013-12-16 at 10 29 32 am](https://f.cloud.github.com/assets/2313682/1755566/b7b4dee4-6666-11e3-8288-8d2eb2100231.png)