Fixes some nasty bugs in the profile screen:

• Currently, social media links without https or http couldn't be parsed due to the URI standard
• I removed empty links
• All profile text was displayed on a single line and consequently often cut off. I set the maximum to ten lines. Also it replaces all new lines with a space as its done on the website.
• An error message with no explanation appeared when entering whitespace strings in profile editing. This fix trims leading and trailing whitespace to prevent the error.