Most seven-year-old children celebrate their birthdays with family and friends, eating cake and having festivities. But Joey Danger Evermore enjoyed his according to his name — by climbing El Capitan in Yosemite National Park. Joey began the climb last weekend as a six-year-old child and finished the climb Thursday a year older, becoming the youngest person to summit the infamous 7,573-foot stone landmark. It was a six-day feat, according to his father Joe Evermore, where…