Cleanup, clarify newton release-notes

This commit clarifies, cleans and improves releasenotes for murano

Co-Authored-By: Maria Zlatkova <mzlatkova@mirantis.com>
Change-Id: I20e31d0c2176eec225568f633dd839117737f169

muranodashboard/tests/releasenotes/notes/display_repo_url-47c3cb0b45c2d68d.yaml

@@ -1,5 +0,0 @@
----
-features:
-  - Added DISPLAY_MURANO_REPO_URL, that will be used as a
-    user-visible link to apps.openstack.org or any other murano
-    apps repository,

releasenotes/notes/abstract-base-class-fix-7cb06a0924b973f3.yaml

@@ -1,4 +1,7 @@
 ---
 fixes:
-  - Specifying a base class in the ui definition now also fetches all the packages with classes
-    that inherit from that class, when glare is used.
+  - Specifying a base class in the UI definition now also fetches all the packages with classes
+    that inherit from that class, when glare is used. For example, if you
+    specify the 'io.example.Parent' class, the dashboard
+    fetches 'io.example.Child1' and 'io.example.Child2', and any other
+    descendants of 'io.example.Parent' that are present.

releasenotes/notes/bug-1579220-0a3fe23ac8f249ee.yaml

@@ -1,5 +1,5 @@
 ---
 fixes:
-  - Fix Downloading Package blocks downloading next package.
-    Use 'tables.LinkAction' instead of 'tables.Action' for
+  - Fixed the issue with sequential download of packages.
+    Dashboard is now using 'tables.LinkAction' instead of 'tables.Action' for
     DownloadPackage table action.

releasenotes/notes/display_repo_url-47c3cb0b45c2d68d.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - Added ``DISPLAY_MURANO_REPO_URL`` setting that is used as a
+    user-visible link to ``apps.openstack.org`` or any other murano
+    applications repository.

releasenotes/notes/import-horizon-filters-af5dcf0720502567.yaml

@@ -1,5 +1,5 @@
 ---
 fixes:
-  - import horizon filters for murano-dashboard, So
-    murano-dashboard templates can use horizon register filters,
-    such as parse_isotime, timesince_or_never, etc
+  - Fixed the issue that prevented the murano dashboard
+    from finding certain horizon filters,
+    such as 'parse_isotime', 'timesince_or_never', and others.

releasenotes/notes/manage-multiple-envs-e587c2e9432e39d7.yaml

@@ -1,6 +1,4 @@
 ---
-
 features:
-  - Added possibility for user to select several environments and execute
-    one of the three actions to all of them at once (delete, abandon or
-    deploy).
+  - Added the capability to execute actions (delete, abandon or deploy)
+    on multiple selected environments.

releasenotes/notes/password-checking-780dc07fa1d9926a.yaml

@@ -1,6 +1,6 @@
 ---
 fixes:
-  - Fixed password-checking in dynamic UI forms by using just type of the
-    field rather than type and ending of field id to determine the password
-    field. Previously password fields with the ids not ending with
-    'password' were not validated by javascript.
+  - Fixed the password check in dynamic UI forms. Previously,
+    the dashboard did not validate the password fields with IDs not ending with 'password'.
+    Now, to determine whether to add default password validators to the field or not,
+    the dashbord only checks the field type itself, instead of both field type and ending of the field ID.

releasenotes/notes/reload-empty-env-10165198e8384b08.yaml

@@ -1,6 +1,4 @@
 ---
-
 fixes:
-  - Environment components page reloads after deployment of
-    empty environment. It allows to add new components to
-    the empty environment without manual page refresh.
+  - The :guilabel:`Environment components` page now reloads after an empty environment deployment.
+    This allows adding new components to the empty environment without having to reload the page manually.

releasenotes/notes/reorganize-dashboard-settings-11733b5c1003154b.yaml

@@ -1,4 +1,11 @@
 ---
 features:
-  - murano-dashboard now use local_settings.d dir for
-    its own config snippet from Horizon.
+  - Murano dashboard now comes with the ``muranodashboard/local/local_settings.d/_50_murano.py``
+    file that contains murano-specific settings for horizon
+    (for example, ``MURANO_API_URL``).
+upgrade:
+  - Previously all murano-specific horizon settings had to be kept in ``local_settings.py``
+    file of Horizon. You need to remove those settings from local_settings.py and
+    copy ``muranodashboard/local/local_settings.d/_50_murano.py``
+    to ``openstack_dashboard/local/local_settings.d/`` directory in horizon and keep all
+    murano-related changes there.

releasenotes/notes/single_request_latest_apps-4f6add404ab07c15.yaml

@@ -1,7 +1,4 @@
 ---
-
-features:
-  - Improved the performance of 'Recent Activity' panel at the
-    'Browse Catalog' page.
-    It was done with refactoring single request for every latest app
-    with single for all, using new API 'in' operator.
+fixes:
+  - Improved the performance of the :guilabel:`Recent Activity` panel on
+    the :guilabel:`Browse Catalog` page.

releasenotes/notes/status-session-b06786d470910080.yaml

@@ -1,7 +1,7 @@
 ---
 fixes:
-  - Previously on user relogin changes to the environment made in the
-    previous session (adding or removing components without deploying) were
-    not saved but environment status was updated. Now status of environment is
-    'Ready to deploy' only in case when current services list is not equal to
-    the list of last deployed services.
+  - Fixed the issue that reset all environment changes from the
+    previous session (adding or removing components without deployment) after consequent login.
+    Also, the :guilabel:`Ready to deploy` status now only displays if there are changes pending in the current session.
+
+