Merge pull request #2 from OXIDprojects/master

added German translation for admin by @nickname
Updated to v1.1.3

More old code removed, german lang files added, support for basic theme
removed.
Added new version from forum with fixes for german umlaute. And took care of the codestyle
Merge pull request #4 from marmaladeDE/master

Fix from OXID forum and codestyling
Changed encoding from UTF-8 to ISO-8859-15 (Western ISO Latin 9)
Corrected encoding

German lang file encoding changed from UTF-8 to ISO-8859-1 (Western ISO
Latin 9)
2nd attempt to correct encoding that could not be merged

Manual correction because github would not allow automatic merge of
pull request.
Update modules/v6c_merchantlink/v6c_mlpaymentgateway.php

Quick IPN bug fix 
Updated to v1.1.3

- Cleaned out more deprecated code
- Added better error reporting
- Added admin fields for PayPal Sandbox
- Renamed functions missing prefix
- Fixed bug related to 4.5.x install
- Updated README
Code clean-up only
Resolved Mergeconflict