Monthly release doc update

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Comment UI improvements

* use tabs for preview/write comment form because its better UX
* fix paddings for comment form and unnecessary borders
* remove unused css/js
* cleanup messy comment form html

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Explain setting

Missing items changelog

Branch creation flow

To improve user experience with web editing I did next improvements:

* when create branch via ui - redirect to tree view so you start add/edit files
* when click on branch name - redirect to tree view instead of commits so you can immedialty add/edit files

Move protected branches to Project settings page

Because all settings should be in one place

License to bv

Api branch deletion

Fixes #1127

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Merge marshal

Remove features raketask

As discussed

Fixes #1179

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Implements drag and drop upload of image in every markdown-area

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

New rules for protected branches

This MR change permissions logic for branch removal. Changes listed below:

Before
* developer can remove branch with terminal but not in UI
* masters can remove any branch with UI even protected one
* force-push to protected branch is not allowed but remove is allowed

After
* none can force push or remove protected branches
* developers and masters can remove normal branches with console and UI

Fix js error when use scroll to highlighted line

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>