Jonathan

Have you ever wanted to have string input fields where you can input any string, and then call this from your templates? If so this is the plugin for you! WP-Strings allows you to input strings, that you can then call as many times as you want within your wordpress template.
If you update one of these strings from within the admin section, the string will change accross all of your templates.
For example, if you had a phone number that you used in multipe locations across your theme, but knew it might change, you can put this into the WP-Strings admin panel. You can then reference the telephone number from your template in the required locations and know in confidence that when you change the number in the backend, the telephone number will change across the site.

WP-Strings

This plugin will allow you to input custom fields into the admin control panel, then you will be able to call these strings from your template files.

hibiscustechno

Query String Remover From Static Resources automatically removes query strings from your static resources like CSS and JavaScript files. It will help to improve your site speed and the overall score in Google PageSpeed, YSlow, Pingdom and GTmetrix when you enable cache. Just install and forget rest , as no configuration needed.
After installing “Query String Remover From Static Resources” just empty your cached resources if you are using a cache plugin already and the magic will happen automatically
Contact Author at http://www.hibiscustechnolab.com for more details.

Query Strings Remover

Remove query strings from static resources like CSS & JS files.

WP-Strings vs Query Strings Remover