GUI: simplified URL reading on application form

Use simple reading from URL params, since URL must be the one
properly formatted on each level of redirection

1.level use:       ?       & (base url and it's params)
2.level use:     %3F     %26 (used inside 1. level redirect param)
3.level use:   %253F   %2526 ...
4.level use: %25253F %252526 ...