Blog: migrate metadata for 2014–2019

Also, adjust some formatting for Redocly (admonitions, indented code
blocks, authorship lines)

blog/2014/xrp-giveaway-for-developers.md

@@ -1,3 +1,13 @@
+---
+date: 2014-07-28
+category: 2014
+labels:
+    - Development
+theme:
+    markdown:
+        editPage:
+            hide: true
+---
 # XRP Giveaway for Developers
 
 Ripple Labs has partnered with [Assembla](https://www.assembla.com/home) to send qualified developers 1,000 XRP to their Ripple Trade account. To apply for this giveaway please fill out and submit [the application form](https://www.assembla.com/ripple). If you’re interested in developing on Ripple please check out the [Primer](https://ripple.com/ripple_primer.pdf) for a high level overview. From there you can dive into different layers of the Ripple ecosystem.
@@ -24,8 +34,6 @@ A simple request-response communication via HTTP. For more information, click [h
 
 ## Middleware
 
-###
-
 ### Ripple Rest API
 
 Use the [official REST API](https://github.com/ripple/ripple-rest) to easily interact with Ripple. Check balances, send payments, set trustlines, and more. Additionally, check out the [community made libraries](https://github.com/ripplelabsbounties) for Ripple Rest.