Add aliases to the list of keywords

This commit makes sure that a dependency can be found in the UI via its
aliases, if any.

Closes gh-231

initializr-web/src/main/groovy/io/spring/initializr/web/ui/UiController.groovy

@@ -87,8 +87,9 @@ class UiController {
 		if (d.weight) {
 			result.weight = d.weight
 		}
-		if (d.keywords) {
-			result.keywords = d.keywords.join(',')
+		if (d.keywords || d.aliases) {
+			def all = d.keywords + d.aliases
+			result.keywords = all.join(',')
 		}
 		result
 	}

initializr-web/src/test/resources/metadata/ui/test-dependencies-1.1.2.json

@@ -14,7 +14,8 @@
     {
       "id": "data-jpa",
       "name": "Data JPA",
-      "group": "Core"
+      "group": "Core",
+      "keywords": "jpa"
     },
     {
       "id": "org.acme:foo",

initializr-web/src/test/resources/metadata/ui/test-dependencies-all.json

@@ -14,7 +14,8 @@
     {
       "id": "data-jpa",
       "name": "Data JPA",
-      "group": "Core"
+      "group": "Core",
+      "keywords": "jpa"
     },
     {
       "id": "org.acme:foo",