Fix: remove duplicate project button and unnecessary spacing

[Sonalis1299]

Summary

This PR fixes UI issues in the project generation form section. The duplicate "Generate My Projects" button was removed, and unnecessary spacing caused by an empty error paragraph was fixed by hiding the element when no error message is present. These changes improve the overall user experience and maintain clean form rendering.

Related Issue

Closes #412

Type of Change

• Bug fix — resolves a broken behaviour
• Feature — adds new functionality
• Data — adds new projects to data/projects.json
• Documentation — updates docs, README, or code comments only
• Style — CSS or visual changes only, no logic change
• Refactor — restructures code without changing behaviour
• Test — adds or updates tests

What Was Changed

File	Change made
templates/index.html	Removed duplicate Generate My Projects submit button and duplicate IDs
static/css/style.css	Added CSS rule to hide empty .form-error-general element and remove unnecessary spacing

How to Test This PR

1. Clone this branch: git checkout fix/skills-input-render-bug
2. Install dependencies: pip install -r requirements.txt
3. Run the app: python app.py
4. Open http://127.0.0.1:5000 and...
5. Run the tests: python tests/test_basic.py

Expected test output:

27 passed, 0 failed out of 27 tests

Test Results

30 passed, 0 failed out of 30 tests

Screenshots

Before	After

Self-Review Checklist

• I have read CONTRIBUTING.md and followed all guidelines
• My branch name follows the convention: feat/, fix/, docs/, data/, style/, test/
• I have run python tests/test_basic.py and all 27 tests pass
• I have run flake8 . locally and there are no errors
• I have not introduced any print() or console.log() debug statements
• Every new function I wrote has a docstring
• I have not modified files outside the scope of the linked issue
• If I changed the UI, I tested it at 375px (mobile) and 1280px (desktop)
• If I added a project to the dataset, it has all required JSON fields

Notes for Reviewer

This PR focuses only on UI cleanup and duplicate element removal. No application logic was modified.

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[Sonalis1299]

Hi @komalharshita , I have fixed the issue and all tests are passing successfully. Please review the PR when possible. Thank you!