[IMP] crm: Whole documentation overhaul

Organize the pipeline

https://www.odoo.com/documentation/user/11.0/discuss/plan_activities.html (clone it here)
Manage lost opportunities -> https://docs.google.com/document/d/1Uxr5L0tmNTv4cUiq948_8KgHMAgtB--Ib-h9K_XjYQM/edit
Manage multiple sales teams -> https://docs.google.com/document/d/1xbQzJozfPyGJxtu1dlYaBvmtU4aZkkGnRT3jmdzp84s/edit

Acquire leads

Convert leads into opportunities ->
https://docs.google.com/document/d/15huZHD7NLqUC-XyogT1cR_oBof-DlC6U-olfxJLuGfY/edit
Generate leads from emails ->
https://docs.google.com/document/d/1qt5LAyb7jjArZqFQbwHANKhkE1uifVuc0I2pnf9eF7k/edit
Generate leads from your website contact page ->
https://docs.google.com/document/d/1shcyTp4gMuekRMIbJqbHfFIIk10N0GHtHIQlPXuax-Q/edit
Send quotations ->
https://docs.google.com/document/d/1wYfImnN1XxxaPQMjTvvIDgMkhXE5ud1D-9pbkr0khsA/edit

Assign and track leads

Track your prospect visits ->
https://docs.google.com/document/d/1wSoV9wgI6HwD7pogTbPuapIfxCgQ5fUWhZ3frU_iOTk/edit
Assign leads automatically based on scoring ->
https://docs.google.com/document/d/1cBc4XOTAnSjjfg3Q-BS14dB2lvv09NaUCEpIlMKyp6U/edit

Analyze performance

Check your Win/Loss ratio ->
https://docs.google.com/document/d/1_-I50VbyWwSrp63pRYq7_Lo7QSr0b-0ru4FLQZv3C2k/edit

Get an accurate probable turnover ->
https://docs.google.com/document/d/1tfCntvywMehg9xVF5NsjA6-6m7QQ-FryfwGkPAOJPNE/edit

Optimize your Day-to-Day work

Synchronize Google Calendar with Odoo ->
https://www.odoo.com/documentation/user/11.0/crm/calendar/google_calendar_credentials.html (Change name)
Use VOIP services in Odoo with OnSIP ->
https://www.odoo.com/documentation/user/11.0/crm/leads/voip/onsip.html (Change name)
Configure your VOIP Asterisk server for Odoo ->
https://www.odoo.com/documentation/user/11.0/crm/leads/voip/setup.html (Change name)

general/odoo_basics/add_user.rst

@@ -43,6 +43,5 @@ log-in.
 
 .. seealso::
     * `Deactivating Users <../../db_management/documentation.html#deactivating-users>`_
-    * :doc:`../../crm/salesteam/setup/create_team`
 
 .. todo:: Add link to How to add companies