Merge pull request #166 from banago/master

Fix: File and Image fields over-flowing the wrapper box.
Merged master and compiled.
Merge pull request #168 from banago/fix-label-height

Fix label height 'master' merge
fix regex bug
Add unit test for #164
spaces not tabs
Merge pull request #134 from humanmade/fix-label-height

Style Inconsistentcy: Check boxes and the rest
incorrect stylesheet location
Don't instantiate class if it doesn't exist.
If tax not defined, handle WP_Error
test repeatable field more than 10
also fix regex for id attr
Merge pull request #164 from humanmade/164-repeatable-group-regex-fail

Repeatable groups with image files get deleted
Merge pull request #149 from humanmade/149-handle-unregistered-taxonomies

PHP Notice in get_delegate_data when no terms
Merge pull request #170 from humanmade/fix-fatal-error-if-field-not-defined

Don't instantiate class if it doesn't exist.
Merge pull request #171 from humanmade/fix-jquery-ui-style-location

jQuery UI stylesheet not loading for datetime_unix
Update readme.md
Update CONTRIBUTING.md
Field ID Regex is incorrect - breaking more than 10 field.

fixes #179
Trim WHitespace