wordpress-mobile/WordPress-iOS-Editor — pull request #453 by aerych (2014-12-15 16:37:17+00:00)
Title: Issues/427 add edit image meta *** DO NOT MERGE ***

First pass (and work in progress) for adding the ability to edit image meta data, e.g. link, caption, etc. Ready for your feedback!!

### Points of interest!
- Adds two new JS libraries: underscore.js and shortcode.js (from core WordPress)
- Image parsing logic was borrowed and modified from wp core in order to be as consistent as possible with existing user expectations
- Adds a WPImageMeta convenience class as a simple holder for meta values.
- Adds a simple modal to demo the edit feature.

### TODOs
- There is some data sanitation and safety logic that needs to be implemented.
- There are some slight differences in the logic that parses out the image, and the logic that rebuilds it. These need to be made uniform.
- Some meta values can be derived from other meta values so the total number can likely be reduced (by at least 2)

### Questions:
What are your thoughts on the best approach to the demo form? Its as simple as possible right now.

### Misc:
I'm sure I'm forgetting something. :)

@SergioEstevao @bummytime @diegoreymendez