Add Apache License

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- License and copyright notice
- State Changes

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- Commercial Use
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Enable touch gestures for dragging

Imports the JQuery UI Touch Punch (http://touchpunch.furf.com/) library
to allow touch gestures to trigger draggable() motions.
Make email optional for poll creation

We now only need to specify a poll name and creator name to create a
poll, as links are given on the "Poll Created!" page.

Adding an email will still check that the pattern is met, and will send
out the links.
Fix for return not adding a new option

We hooked onto the keypress in the javascript but had forgotten to add
the id back on to the row. Copy-paste fail
Merge pull request #65 from tpkelly/develop

Add Apache License