Covers [DS-6](https://bonitasoft.atlassian.net/browse/DS-6)

(cherry picked from commit 536d2e3a)

Relates to [ICI-1224](https://bonitasoft.atlassian.net/browse/ICI-1224)

Relates to [ICI-1185](https://bonitasoft.atlassian.net/browse/ICI-1185)

Relates to [ICI-1185](https://bonitasoft.atlassian.net/browse/ICI-1185)

fix release notes filename

Instruct git to always keep the release notes file from the current
branch when merging from older documentation version.

This reverts commit ea0a0cde.

Relates to [ICI-1224](https://bonitasoft.atlassian.net/browse/ICI-1224)

* fix ICI to BICI
* fix typos

Relates to [ICI-1012](https://bonitasoft.atlassian.net/browse/ICI-1012)

* delete useless page
* remove dashboard page ref

fix(deploy): fix ICI environment variable name

Relates to [ICI-932](https://bonitasoft.atlassian.net/browse/ICI-932)

Closes [ICI-921](https://bonitasoft.atlassian.net/browse/ICI-921)

* put logo on top
* remove Architecture link
* add more content for SEO

items related to documentation have "Documentation" in their title

* add operations manager value
* add screenshot of Omar LA
* push architecture lower as its not at the heart of the Add on (not like BCD)

* feat(release note): add 1.0.2 bug fixes

- add bugs fixed in 1.0.2

add bug fixes in doc and add-on like it's done in Bonita

Relates to [ICI-900](https://bonitasoft.atlassian.net/browse/ICI-900)

* feat(api): remove references to ICIAPI, now considered as internal

* feat(installation) move installation guide to documentation
Relates to [ICI-844](https://bonitasoft.atlassian.net/browse/ICI-844)

* move all prerequisites to prerequisites page
* rename to evaluation mode in notes
* added description of the two applications
* doc(install): add ES limitation in eval mode

Closes [ICI-848](https://bonitasoft.atlassian.net/browse/ICI-848)

replaced by `Process manager`

* change title to getting started. Consistend with Bonita. Easier to point to from Customer Portal.
* rename installation to getting started in taxonomy

copy-paste killed me