Removed obsolete requirements.txt from project root
Removed logs/errors.log from repository

And added whole logs/ dir to .gitignore
Improvements price-table block layout
Added logs directory to repository
Exception when anonymous user presses buy now button
Extracted pick form JS out of html
Modified custom size form appearance
Quantity and custom size form improvements

Fixed ajax form submit logic (form must be submited to server even if user
chooses quantity from <ol> items, or width/height won't be updated in session)
Added unit converion logic for width/height
Updated quantity form UI - highlight selected quantity
Small optimization for options form number of queries
Merge pull request #17 from theimip/options_forms

Options forms