Remove files whithout any dependencies on them
Fixed PPR#2 from WladinQ

Description:
	"When updating my basic profile's information the server script
	does som mystery, because on password change <form> it shows to me that
	some error happened and even if I didn't touch the password change
	form."

Solution:
	Rewrite the useless and dirty HTML code -- split one big <form> to
	smaller ones. Thus also rewrite the pointlessly complicated
	server-side logic to do parsing of smaller parts.

Also done?
	- improved performance of `\getUser(mixed, mixed)` by checking cache
	- introduced new authentization <form> template
Fixed mysterious behavior of the 'Back' ('Späť') button above on the topic page
Merge branch 'deprecated-files' into dh-1.5