documentation: Add tags to all featured blibs (#139)

* documentation: add tags to all featured blips

radar/2017-03-01/akka.md

@@ -2,6 +2,7 @@
 title:      "Akka"
 ring:       trial
 quadrant:   languages-and-frameworks
+tags: [coding]
 ---
 
 With the growing adoption of microservice-based architectures, the interest in frameworks and tools that make building systems that follow the reactive manifesto possible has increased.

radar/2017-03-01/client-side-error-logging.md

@@ -2,6 +2,7 @@
 title:      "Client-Side Error Logging"
 ring:       trial
 quadrant:   methods-and-patterns
+tags: [architecture, frontend]
 ---
 
 More and more business logic is done client-side with various web and app technologies.

radar/2017-03-01/devops-practices.md

@@ -2,6 +2,7 @@
 title:      "Devops practices"
 ring:       adopt
 quadrant:   methods-and-patterns
+tags: [devops]
 ---
 
 DevOps is a term that has been around for some years now.

radar/2017-03-01/gradle.md

@@ -2,6 +2,7 @@
 title:      "Gradle"
 ring:       adopt
 quadrant:   tools
+tags: [ci/cd, coding]
 ---
 
 Gradle is a build automation tool originating in the Java space, providing declarative dependency management (like Maven) and support for custom functionality (like Ant). It has superb multi-project support and is extremely extensible via third-party plugins and also via self-written extensions and plugins that make it outstanding in its area.

radar/2017-03-01/jest.md

@@ -2,6 +2,7 @@
 title:      "Jest "
 ring:       assess
 quadrant:   tools
+tags: [frontend, quality assurance]
 ---
 
 [Jest](https://facebook.github.io/jest/) is a JavaScript testing framework by facebook to test JavaScript code **and** React applications / components.
@@ -17,4 +18,4 @@ We started using Jest (and [watchmen](https://github.com/facebook/watchman)) ins
 
 It is easy to set up.
 And even if you have a running setup with Karma/Chai you can easily replace Karma with Jest.
-With a small [workaround](https://medium.com/@RubenOostinga/combining-chai-and-jest-matchers-d12d1ffd0303#.3callo273), Chai and Jest test matchers work fine together.
+With a small [workaround](https://medium.com/@RubenOostinga/combining-chai-and-jest-matchers-d12d1ffd0303#.3callo273), Chai and Jest test matchers work fine together.

radar/2017-03-01/rxjava.md

@@ -2,6 +2,7 @@
 title:      "RxJava"
 ring:       trial
 quadrant:   tools
+tags: [coding, architecture]
 ---
 
 [RxJava](https://github.com/ReactiveX/RxJava) is the Open Source Java implementation of ReactiveX. The main concept heavily relies on the Observer- (and Subscriber)-Pattern. An Observer emits a stream of data, which can be consumed by Subscribers. The Subscriber reacts (That's where the 'Rx' comes from) asynchronously to those data events. Reactive Extensions were originally developed by Mircosoft's Erik Meijer and his team and have been ported to all major programming languages after being released to the public as Open Source software. We use RxJava (but actually RxAndroid to be precise) in the Congstar Android App to let the UI layer react to changes in the underlying data layer.

radar/2017-03-01/strategic-domain-driven-design.md

@@ -2,6 +2,7 @@
 title:      "Strategic Domain Driven Design"
 ring:       adopt
 quadrant:   methods-and-patterns
+tags: [architecture]
 ---
 
 Design of distributed applications need to be done wisely. Strategic Domain Driven Design is an approach for modelling large-scale applications and systems and is introduced in the last part of Eric Evans' book _**Domain Driven Design**_.