feat: Add registration page (Sourcery refactored)

[sourcery-ai]

Pull Request #286 refactored by Sourcery.

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To manually merge these changes, make sure you're on the add-signup-page branch, then run:

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Help us improve this pull request!

[sourcery-ai]

Function Solution.set_state refactored with the following changes:

• Inline variable that is immediately returned (inline-immediately-returned-variable)

[sourcery-ai]

Function confirm_email refactored with the following changes:

• Remove except handlers that can never be reached (remove-redundant-except-handler)

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 0.01%.

Quality metrics	Before	After	Change
Complexity	2.59 ⭐	2.60 ⭐	0.01 👎
Method Length	36.48 ⭐	36.44 ⭐	-0.04 👍
Working memory	6.77 🙂	6.76 🙂	-0.01 👍
Quality	79.55% ⭐	79.56% ⭐	0.01% 👍

Other metrics	Before	After	Change
Lines	1190	1189	-1

Changed files	Quality Before	Quality After	Quality Change
lms/lmsdb/models.py	84.54% ⭐	84.56% ⭐	0.02% 👍
lms/lmsweb/views.py	73.75% 🙂	73.76% 🙂	0.01% 👍

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

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
lms/lmsweb/views.py	login	11 🙂	157 😞	12 😞	47.95% 😞	Try splitting into smaller methods. Extract out complex expressions
lms/lmsweb/views.py	comment	13 🙂	202 😞	8 🙂	50.15% 🙂	Try splitting into smaller methods
lms/lmsdb/models.py	Solution._base_next_unchecked	0 ⭐	95 🙂	20 ⛔	57.42% 🙂	Extract out complex expressions
lms/lmsweb/views.py	view	7 ⭐	134 😞	10 😞	57.80% 🙂	Try splitting into smaller methods. Extract out complex expressions
lms/lmsdb/models.py	User.notes	1 ⭐	92 🙂	18 ⛔	58.26% 🙂	Extract out complex expressions

Legend and Explanation

The emojis denote the absolute quality of the code:

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• 😞 poor
• ⛔ very poor

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

---

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We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!

[lgtm-com]

This pull request introduces 1 alert when merging 307b6f4 into 3913a5e - view on LGTM.com

new alerts:

• 1 for Unused import