Lychee 2.7

• New Intermediate sized images for small screen devices #67
• New Added Docker help (@renfredxh, #252)
• New Move-Photo context shows album previews
• Improved Upload shows server-errors
• Improved Improved thumb creation
• Improved Docker (@renfredxh, #252)
• Improved CSS has been rewritten partly
• Improved Front-end has been rewritten partly #245
• Improved Folder- and code-structure has been updated
• Improved Context-menu now based on basicContext #245
• Fixed OpenGraph image too big for some sites #69
• Fixed Wrong sizes after EXIF rotation
• Fixed Returning to 'Albums' after searching failed
• Fixed Move-Photo not scrollable #215