Bug 14585: Fixing up online help on main page

Bug 14585: Fixing up online help on main page

To test:

1) Go to home page of staff client and click the Help
2) Notice: 'you should now 'got to' Koha'
	   'settings found in 'a'dministration.' (should be capitalized)
	   'Once that user is set you should use that user to log in rather than the root user set up as part of installation.' (could be worded better)
3) Apply patch, close Help, reload page, reopen Help
4) Notice: 'got to' --> 'go to'
	   'administration' --> 'Administration'
	   'Once that user is set you should use that user to log in rather than the root user set up as part of installation.'

Signed-off-by: Joonas Kylmälä <j.kylmala@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>