[ADD] web_tip: module for tip definition and display

Also added with this commit:
crm: tip data
web: hooks (events) for web_tip
web_kanban: hooks (events) for web_tip
[IMP]Contract:Added warning message on confirmation of sales order if analytic account on analytic plan and contract is in state 'close/cancelled/pending'.
[IMP]Account:analytic_account_demo.xml: change account type.
[IMP]Chrome.js:Added action in py to filter the data according to the used contracts and same added feature to use 'action' as well as 'action_id'.