Made pic of day attribution handle license not retrieved.

Says "Tap for License" for now if it couldn't extract the license name from the categories. Also, in the case that the license could not be determined the license url is also not known, so for now when this happens just made the license button link to the image's wiki page. (The wiki page should have license info). These are less than ideal stopgap solutions.
Made alpha of settings controls more consistent.
Created group folder for splash images.
Reduced file size of splash images with "ImageOptim".
AspectFillThumbFetcher now caches images as jpg files.

Allows much greater control over file size of bundled images as they can now be pngcrush'ed or otherwise iptimized. I optimized the bundled images included with this commit using "ImageOptim" resulting in a smaller app binary.
Merge pull request #106 from montehurd/licenseNotFound

Made pic of day attribution handle license not retrieved.
Merge pull request #107 from montehurd/settingsStyle

Made alpha of settings controls more consistent.
Merge pull request #108 from montehurd/optimizeImages

Reduced app binary size by optimizing bundled images.
Fixed details page category heading alignment on ipad.
Reduced height of category entries.
Title & descrip text box width same as categories box.

Also made categories have background color to make them better stand out as a group.
Merge pull request #109 from montehurd/categoryLayout

Fixed details page "Category" heading layout issue on iPad.
Details can scroll more on iPad.

Also sets focus to empty text field if upload is tapped rather than just scrolling up.
Merge pull request #110 from montehurd/detailsTweaks

Details can scroll more on iPad.
Made mock page at top of settings look better on ipad.
Merge pull request #111 from montehurd/settingsMockPage

Made mock page at top of settings look better on ipad.
bump version to 1.0.6 for release!
Better details scroll margin calculation.

If the height of the details table view's contents are less than the screen height only add enough scroll margin to let the bottom of the details to scroll into view. (No point in having so much margin in this case that the top of the content can scroll off the top of the screen.)
Merge pull request #112 from montehurd/detailsScrollMargin

Better details scroll margin calculation.
Fixed for description field first responder bug.

Bug happened on details page for already uploaded files. If details text box was tapped, then device was rotated, the details would auto scrolled incorrectly (this auto scrolling should only happen when the keyboard is visible when editing description on yet to be uploaded file).