Update AppLog methods with local TAG
Update AppLog.* calls
Replace Log.* with AppLog.*
Added POSTS to AppLog tags, changed several tags in AppLog calls
Renamed ReaderLogViewerActivity to AppLogViewerActivity and moved it to the ui package
Removed showReaderLogViewer from ReaderActivityLauncher
Merge pull request #640 from wordpress-mobile/issue/630-replace-Log-with-AppLog

fix #630 - replace Log.* with AppLog.*