new feature branch "searchable"

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927752 b8457f37-d9ea-0310-8a92-e5e31aec5664
Moved settings to their own class for easy extending/access

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927779 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added ability to quickly remove an additional field

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927785 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated LinkSetup test to match new structure

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927786 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated Cleanup test to work with new structure

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927792 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated phpunit.xml test suite to run the setup and teardown together

git-svn-id: https://plugins.svn.wordpress.org/simple-links/branches/searchable@927797 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merged in searchable branch. Which actually has nothing to do with searching at this point. Instead it improves the settings section dramatically making it easier to do things like add a search feature.

git-svn-id: https://plugins.svn.wordpress.org/simple-links/trunk@927819 b8457f37-d9ea-0310-8a92-e5e31aec5664