Try my first pull request ;)

Here are the changes:

    1. Comments added to transport module functions.
    2. Master view was refactored. The main view was devided into separate functions.
    3. All local operation with files were updated to remote operations.
    4. Numerous errors handlers were added for showing them in template.
    5. Master template was upgraded.
    6. /utils/files_info.py module was removed because it is already not needed.