Fix handling of AdhocReport response (#47)

[fruechel]

Not using XML directly any more. This can cause large reports to fail
parsing. Removed comment that indicated we shouldn't be doing this ;-)

Types of changes

• Bug fix (non-breaking change which fixes an issue)

[fruechel]

@gschneider-r7 this is in relation to #47 and fixes the error we're seeing. The bug was present already but only exposed through my PR #43. Now we're not using as_xml directly but rather only on the part that's actually an XML response. the other part is properly treated as CSV straight away.

Tested the CSV component but not how an XML report is handled. However, the way the code changed there should not be any difference.

[gschneider-r7]

I don't have time to test this myself currently, so if you need this merged and published I'll have to take your word for it that it works. 😉 Just let me know if you need me to push it out.

The changes otherwise look fine to me.

[fruechel]

Yup, we're currently pinned to the dev commit in my repo and it keeps happily importing. Haven't seen any issues since we pushed out this fix. Thanks.