Adds trimming of the post content for featured post.
Adds retrieval of the featured image.
Retrieves the thumbnail image meta data.
Filters out the paths and filenames.
Moves the database code into a class for easier future maintenance.
Adds basic output of thumbnail.
Adds width and height to the thumbnail output.
Adds alt output to the thumbnail.
Adds link to the thumbnail.
Adds retrieval of alt attribute.
Adds error handling.
few small changes
Merge branch 'external-blog'