Improved requirements (#106)
Added a new intermediate picture size feature. When activated, pictures will be resized to a smaller version to be displayed, the goal being to use less bandwidth and display pictures faster. Those smaller pictures can also be generated with a button (the cog wheels) and the process is sequential and takes some time. The resizing has been moved to another fastest function, also for the thumbnails, without any apparent loss of quality.
Merge branch 'master' of https://github.com/electerious/Lychee
Correcting a bad renaming of the extension for the small versions of the pictures