Fix: Proper usage of requests

After CCP restarted the application pool today, I began experiencing issues with evelink.

Adding some debug printing of the content revealed that CCP was returning a HTTP 411 (we should probably catch that, and other HTTP errors!), which means either we need to send data chunked, or have a content-length.

Some quick investigating later I found this comment related to a previous issue https://github.com/kennethreitz/requests/issues/223#issuecomment-2934177

Here he says:

`params` is used for query url parameters. `data` is used for body data.

Fixing this on line 326 of api.py solved the problem entirely :-)

In the future we should really catch possible HTTP exceptions and not just blindly pass data to the XML parser!

Below is the error I got.


```python
$ python -m cron.transaction_import
DEBUG:evelink.api:Calling eve/CharacterID with params={'names': 'This is alt'}
DEBUG:evelink.api:POSTing request
INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): api.eveonline.com
DEBUG:evelink.api:Response: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd">
<HTML><HEAD><TITLE>Length Required</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Length Required</h2>
<hr><p>HTTP Error 411. The request must be chunked or have a content length.</p>
</BODY></HTML>

Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/home/kristoffer/code/eve/cron/transaction_import.py", line 40, in <module>
    charid = eve.character_id_from_name(eve_character)
  File "/home/kristoffer/.virtualenvs/eve/local/lib/python2.7/site-packages/evelink/eve.py", line 139, in character_id_from_name
    api_result = self.character_ids_from_names([name])
  File "/home/kristoffer/.virtualenvs/eve/local/lib/python2.7/site-packages/evelink/api.py", line 462, in wrapper
    kw['api_result'] = client.api.get(self.path, params=params)
  File "/home/kristoffer/.virtualenvs/eve/local/lib/python2.7/site-packages/evelink/api.py", line 251, in get
    tree = ElementTree.fromstring(response)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1301, in XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1643, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1507, in _raiseerror
    raise err
xml.etree.ElementTree.ParseError: not well-formed (invalid token): line 1, column 49
```