Add comprehensive test suite — 81% cross-package coverage

Bug fixes:
- config: remove unused log import
- item: fix Printf format %d->%t for boolean ReadState
- util: update stale config.Read -> config.Init, remove config.Config.DBServer

Test files added:
- config/config_test.go: Init, readConfig, addDefaults (100%)
- vlog/vlog_test.go: Printf, Println verbose/silent (100%)
- models/db_test.go: InitDB tests
- models/feed/feed_test.go: CRUD, filter, Categories, NewFeed, ResolveFeedURL (87%)
- models/item/item_test.go: CRUD, Filter with category/search/starred, rewriteImages (71%)
- exporter/exporter_test.go: all export formats (91%)
- importer/importer_test.go: InsertIItem, ImportJSON (90%)
- crawler/crawler_test.go: GetFeedContent, CrawlFeed, CrawlWorker, Crawl (89%)
- web/web_test.go: auth, login/logout, stream, item, feed, category,
  export, crawl, imageProxy handlers (77%)

Remaining 0% functions require HTTP/rice.MustFindBox/main entry and
can't be unit tested without refactoring (see tickets NK-gqkh96, NK-6q9nyg).

1 files changed, 5 insertions, 4 deletions

diff --git a/util/util.go b/util/util.go
index 59e7b8e..d6fda0b 100644
--- a/util/util.go
+++ b/util/util.go
@@ -1,18 +1,19 @@
 package util
 
 import (
+	"os"
+
 	"adammathes.com/neko/config"
 	"adammathes.com/neko/models"
-	"os"
 )
 
 var DEFAULT_CONFIG = "config.json"
 
 func init() {
 	var configFile = DEFAULT_CONFIG
-	if len(os.Args) > 1  {
+	if len(os.Args) > 1 {
 		configFile = os.Args[1]
 	}
-	config.Read(configFile)
-	models.InitDB(config.Config.DBServer)
+	config.Init(configFile)
+	models.InitDB()
 }