Multifile order price calculation
Recalculate price when quantity is changed via up/down buttons of "Number of files" field
Don't increase numer_of_files value when pressing enter
Add multifile icon to summary list
Refresh price on mulrifile option toggle
Limit summary list item width to 75px
Optimized category tree menu rendering

Reduced number of queries
Optimized number of queries in options forms
And another one query count optimization commit
minifix
Merge pull request #19 from theimip/options_forms

Options forms