NXDRIVE-2076: Change the cursor on click on new account connect button

[rom1win]

When adding an account, the browser may take some time
to open. A waiting cursor has been added so the user
can know that something is currently happening.

Also changelog has been updated.

[nuxeojenkins]

View issue in JIRA: NXDRIVE-2076: Change the cursor on click on new account connect button

[BoboTiG]

👍

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.02%.

Quality metrics	Before	After	Change
Complexity	2.05 ⭐	2.05 ⭐	0.00
Method Length	71.30 🙂	71.44 🙂	0.14 👎
Working memory	5.85 ⭐	5.85 ⭐	0.00
Quality	83.00% ⭐	82.98% ⭐	-0.02% 👎

Other metrics	Before	After	Change
Lines	1657	1662	5

Changed files	Quality Before	Quality After	Quality Change
nxdrive/gui/application.py	83.00% ⭐	82.98% ⭐	-0.02% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
nxdrive/gui/application.py	Application.accept_unofficial_ssl_cert	1 ⭐	359 ⛔	33 ⛔	34.85% 😞	Try splitting into smaller methods. Extract out complex expressions
nxdrive/gui/application.py	Application._fill_qml_context	2 ⭐	285 ⛔	27 ⛔	36.74% 😞	Try splitting into smaller methods. Extract out complex expressions
nxdrive/gui/application.py	Application.init_gui	5 ⭐	476 ⛔	12 😞	41.77% 😞	Try splitting into smaller methods. Extract out complex expressions
nxdrive/gui/application.py	Application._handle_nxdrive_url	10 🙂	180 😞	15 😞	42.44% 😞	Try splitting into smaller methods. Extract out complex expressions
nxdrive/gui/application.py	Application.confirm_deletion	7 ⭐	215 ⛔	11 😞	48.54% 😞	Try splitting into smaller methods. Extract out complex expressions

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• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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