23 photofix

my own fixes and updates to the Photos branch, merges onto the Photos branch.

Features:
* Mild fixing of erroneous spacing (for future reference, indents are 4 spaces, no tabs)
* Added comments where necessary to clean up reading of the code
* Downloaded smaller size of images in the thumbnail view (url_sq, 75x75) instead of (url_m, 500x333) to speed up image processing
* Added spinning progress bar & a counter to show progress of downloading thumbnails
* Modified the grid view slightly (still trying to make it bigger WIP; but now it's 5 columns)
* Removed VideoList.java (same as PhotoList.java) and dependency xml files
* Added spinning progress bar to the loading of the PhotoList