Add explanatory popup notes to loan pages

Closes  #106
Fix "Complete ..l loan" link color
Fix .starimg padding
Small css fix registration pages
Fix confirmation message upon lender creation
Fix redirect upon lender creation

Show confirmation message instead of redirecting to ”My Impact” page
Redirect newly created lender to lending cart during checkout

Closes #100
Remove automated newsletter subscription

Closes #101
Fix loaners page layout

Large profile images should not break the layout.
Closes #104