added ISE 14.7 IPCore Versions and Interface Extensions for the ISE Backend
added ISE 14.7 to Workflow Frontend
fixed indentation mistake
added ISE 14.7 to supported Workflows with Virtex 6 Board
forgot to add ISE 14.7 to list of class elements
added ISE 14.7 to enumeration variable storing the Workflows
added a new file introduced in workflow adding process, fixed tabs and line ending inconsistencies
updated build scripts in examples to use workflow ISE14.7
Merge pull request #14 from steffesm/development

Fix for "IP Core Versions not matching ISE Version #3"