Version 0.2.6

• Matched simple modal style with new modal design
• Implemented Websocket and HTTP Request Timeout
• Now show discarded label in sales list for discarded sale
• Fixed Product blueprint purchase price not showing even though priv is set
• Planed organization's lipi subscription pricing calculator
• Added search field in pos-select-products search by identifier code
• Improved network error handling with retry/reload support
• clarified how product blueprint should be used, created and edited
• product selection count limit is not working is pos select product page
• write server tests simulating selling from warehouse