Implement new provider smscom

[axel]

Implement the swedish sms gateway provider http://www.smscom.se

Translation:
URL-call
An easy way to send SMS with URL call, then simply perform an HTTP GET
request to http://web.smscom.se/sendsms.aspx
Necessary parameters:
• acc, account
• passport, password
• msg, message
• Thursday, receiver
• from, sender
• priority, priority (1 low, 2 normal, 3 high)
Parameters corresponds exactly to them for the SMS feature in the web service as described before.
In addition to these, the following additional parameters:
• type, text type (see below)
• error, address any error message to be sent to
• ok, address SMS ID to be sent to
The parameter type is currently ignores all values except "flash" (without quotation marks), which results
in a flash SMS sent. For more information on flash SMS see sendmail function in Flash
web service.
The parameters and error ok forwarding a status code and text message-id to
specified addresses. Not used to print messages directly. These two parameters
can be used for easier handling and split the handling of status messages.
Example:
http://web.smscom.se/sendsms.aspx?acc=test&pass=1234&msg=Testar&to=11111111111&from=ip1&pri=2

[axel]

Successfully implemented and tested, also multibyte characters like german umlaute ä where deliverd correctly.