Curl option CURLOPT_HTTPAUTH inserted

Set curl option CURLOPT_HTTPAUTH, if the url includes user name and password.
e.g. http://username:password@www.example.com/cal.ics
Remove unneeded code

The removed code is unneeded because the variable $isFile cannot be true at this position. See line 74.
fixed a missing string
Capitalizing URL as a user request
Typo fixed thanks to Wouter!!
Fixed Typo thanks to Wouter!!
Merge pull request #34 from carcam/master

Language issues
Merge pull request #32 from bitschubse/master

Some changes on iCalImport.php
In filter module do not use target menu item's default task if we are on a jevents page which isn;t the detail view
More admin -> site asset moves and corrections
Correct router which sometimes output the task twice in the URL
Improve admin user access to edit and delete events in backend
Improve css in Joomla 3 tables and lists
Language file corrections thanks to Carcam/Wouter
Mechanism to allow filter module to reset the filters in various scenarios
Updated to work correctly, checks if in event details, then checks if its to show the filter or not. If not in event details it shows all the time.
Updated to work correctly, checks if in event details, then checks if its to show the filter or not. If not in event details it shows all the time.
Updated to work correctly, checks if in event details, then checks if its to show the filter or not. If not in event details it shows all the time.