Update dashboard.js
Update dashboard.js

Tinkering with the input box I set refresh interval to 0 and various negative numbers.  This would cause cpu load to spike, and the graphs would never load.  The time in the upper right would tick off every second, though I suspect it was ticking much faster but it only has 1-second resolution.  The first time I did this Firefox stopped behaving for ~2-3 minutes but eventually let me change it. I repeated this test using firebug and confirmed it was essentially refreshing the UI as fast as it could spawn new requests.  This diff ensures the refresh interval is a positive number greater than or equal to '1'.  I originally set it '>0' but the decided to see what would happen if I fed '0.1' via the UI and the bug came back.  This diff appears to work for me.
johnseekins/graphite-web,phreakocious/graphite-web,krux/graphite-web,cgvarela/graphite-web,ZelunZhang/graphite-web,brutasse/graphite-web,DanCech/graphite-web,cosm0s/graphite-web,AICIDNN/graphite-web,johnseekins/graphite-web,atnak/graphite-web,cosm0s/graphite-web,AICIDNN/graphite-web,cybem/graphite-web-iow,graphite-project/graphite-web,DanCech/graphite-web,cybem/graphite-web-iow,Invoca/graphite-web,krux/graphite-web,lyft/graphite-web,deniszh/graphite-web,krux/graphite-web,bpaquet/graphite-web,nkhuyu/graphite-web,EinsamHauer/graphite-web-iow,axibase/graphite-web,brutasse/graphite-web,piotr1212/graphite-web,edwardmlyte/graphite-web,graphite-server/graphite-web,DanCech/graphite-web,jssjr/graphite-web,kkdk5535/graphite-web,lfckop/graphite-web,cgvarela/graphite-web,obfuscurity/graphite-web,synedge/graphite-web,cybem/graphite-web-iow,ZelunZhang/graphite-web,gwaldo/graphite-web,bbc/graphite-web,dbn/graphite-web,lyft/graphite-web,pu239ppy/graphite-web,jssjr/graphite-web,phreakocious/graphite-web,drax68/graphite-web,phreakocious/graphite-web,markolson/graphite-web,deniszh/graphite-web,goir/graphite-web,redice/graphite-web,synedge/graphite-web,cgvarela/graphite-web,zBMNForks/graphite-web,bruce-lyft/graphite-web,blacked/graphite-web,nkhuyu/graphite-web,criteo-forks/graphite-web,graphite-project/graphite-web,phreakocious/graphite-web,drax68/graphite-web,Squarespace/graphite-web,penpen/graphite-web,axibase/graphite-web,krux/graphite-web,synedge/graphite-web,penpen/graphite-web,obfuscurity/graphite-web,JeanFred/graphite-web,bbc/graphite-web,zBMNForks/graphite-web,Aloomaio/graphite-web,esnet/graphite-web,cbowman0/graphite-web,atnak/graphite-web,deniszh/graphite-web,disqus/graphite-web,bruce-lyft/graphite-web,esnet/graphite-web,Skyscanner/graphite-web,bbc/graphite-web,blacked/graphite-web,blacked/graphite-web,phreakocious/graphite-web,markolson/graphite-web,Squarespace/graphite-web,kkdk5535/graphite-web,obfuscurity/graphite-web,piotr1212/graphite-web,Invoca/graphite-web,redice/graphite-web,brutasse/graphite-web,atnak/graphite-web,edwardmlyte/graphite-web,graphite-server/graphite-web,criteo-forks/graphite-web,brutasse/graphite-web,edwardmlyte/graphite-web,synedge/graphite-web,esnet/graphite-web,DanCech/graphite-web,jssjr/graphite-web,cbowman0/graphite-web,ZelunZhang/graphite-web,gwaldo/graphite-web,cbowman0/graphite-web,obfuscurity/graphite-web,mcoolive/graphite-web,Aloomaio/graphite-web,edwardmlyte/graphite-web,gwaldo/graphite-web,section-io/graphite-web,atnak/graphite-web,dbn/graphite-web,cybem/graphite-web-iow,Skyscanner/graphite-web,redice/graphite-web,bbc/graphite-web,section-io/graphite-web,cybem/graphite-web-iow,Aloomaio/graphite-web,Aloomaio/graphite-web,bmhatfield/graphite-web,drax68/graphite-web,graphite-server/graphite-web,bmhatfield/graphite-web,axibase/graphite-web,bpaquet/graphite-web,Squarespace/graphite-web,mcoolive/graphite-web,brutasse/graphite-web,ZelunZhang/graphite-web,dbn/graphite-web,bpaquet/graphite-web,johnseekins/graphite-web,disqus/graphite-web,goir/graphite-web,bmhatfield/graphite-web,cosm0s/graphite-web,Squarespace/graphite-web,bpaquet/graphite-web,Skyscanner/graphite-web,mcoolive/graphite-web,jssjr/graphite-web,Squarespace/graphite-web,DanCech/graphite-web,brutasse/graphite-web,JeanFred/graphite-web,jssjr/graphite-web,Invoca/graphite-web,AICIDNN/graphite-web,krux/graphite-web,penpen/graphite-web,deniszh/graphite-web,esnet/graphite-web,Skyscanner/graphite-web,bpaquet/graphite-web,Aloomaio/graphite-web,redice/graphite-web,lyft/graphite-web,section-io/graphite-web,Aloomaio/graphite-web,zBMNForks/graphite-web,disqus/graphite-web,axibase/graphite-web,bbc/graphite-web,bruce-lyft/graphite-web,zBMNForks/graphite-web,criteo-forks/graphite-web,Skyscanner/graphite-web,section-io/graphite-web,disqus/graphite-web,goir/graphite-web,EinsamHauer/graphite-web-iow,JeanFred/graphite-web,gwaldo/graphite-web,disqus/graphite-web,disqus/graphite-web,Squarespace/graphite-web,lfckop/graphite-web,cosm0s/graphite-web,kkdk5535/graphite-web,esnet/graphite-web,redice/graphite-web,piotr1212/graphite-web,kkdk5535/graphite-web,pu239ppy/graphite-web,bmhatfield/graphite-web,johnseekins/graphite-web,bmhatfield/graphite-web,Skyscanner/graphite-web,edwardmlyte/graphite-web,EinsamHauer/graphite-web-iow,markolson/graphite-web,atnak/graphite-web,dbn/graphite-web,axibase/graphite-web,drax68/graphite-web,EinsamHauer/graphite-web-iow,edwardmlyte/graphite-web,gwaldo/graphite-web,drax68/graphite-web,mcoolive/graphite-web,nkhuyu/graphite-web,graphite-project/graphite-web,obfuscurity/graphite-web,mcoolive/graphite-web,criteo-forks/graphite-web,goir/graphite-web,cosm0s/graphite-web,lfckop/graphite-web,synedge/graphite-web,obfuscurity/graphite-web,blacked/graphite-web,AICIDNN/graphite-web,dbn/graphite-web,bruce-lyft/graphite-web,cgvarela/graphite-web,bruce-lyft/graphite-web,pu239ppy/graphite-web,piotr1212/graphite-web,zBMNForks/graphite-web,nkhuyu/graphite-web,lyft/graphite-web,pu239ppy/graphite-web,pu239ppy/graphite-web,phreakocious/graphite-w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