Fixes a bug with the datepicker and non-loaded defaults

The datepicker defaults weren't loaded due to a wrong references in the
coffee file. This commit fixes that issue.
Merge pull request #8 from turanct/date-picker

Fixes a bug with the datepicker and non-loaded defaults
Added a check to see if the method exists when looping the
eventlisteners.
Merge pull request #9 from sumocoders/improved-error-handling

Added a check to see if the method exists when looping the
More detailed error-message
mail template added
Fix mail template image url
Bugfix: IE expects 2 parameters for splice.
For once IE takes the standards seriously.
Compiled js
Compiled js
Removed reference to html2canvas

We don't use this anymore.
Merge pull request #10 from sumocoders/bugfix-no-more-canvasplugin

Removed reference to html2canvas
Specified the version for Capistrano
Merge pull request #11 from sumocoders/specified-cap-version

Specified the version for Capistrano
Create an instance per form.

We will use the class-name data-attribute to create an instance of the
correct class. The fallback will be Form.
No more eval
Check if the class is defined, throw an exception otherwise
Cleanup
Even better code, more compact
Move datefield-related method-calling into the datefields-method