Fixed bug in concat method for ChocolateChip-UI
Fixed bug in concat method for ChocolateChip-UI

Fixed two bugs, one in ChUI.js and one in ChocolateChip.js that caused
improper string concatenation.

sjolicoeur/chocolatechip-ui,SoumitraAgarwal/chocolatechip-ui,zartata/chocolatechip-ui,rbiggs/chocolatechip-ui,rbiggs/chocolatechip-ui,tranc99/chocolatechip-ui,chocolatechipui/chocolatechip-ui,zartata/chocolatechip-ui,ZLJASON/chocolatechip-ui,sourcebits-robertbiggs/chocolatechip-ui,bright-sparks/chocolatechip-ui,bright-sparks/chocolatechip-ui,chocolatechip-ui/chocolatechipui,sjolicoeur/chocolatechip-ui,SoumitraAgarwal/chocolatechip-ui,chocolatechipui/chocolatechip-ui,ZLJASON/chocolatechip-ui,chocolatechip-ui/chocolatechipui,tranc99/chocolatechip-ui,sourcebitsllc/chocolatechip-ui,sourcebits-robertbiggs/chocolatechip-ui,SoumitraAgarwal/chocolatechip-ui,sourcebitsllc/chocolatechip-ui