(feature) added women-only opportunities filter

[skanda1395]

Description

A checkbox is provided to toggle this filter. When selected, women-only opportunities are displayed. Unselecting it will go back to the previous state (shows opportunities for all).

Fixed #179

Type of change

Please check options that are relevant to your PR.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] This change requires a documentation update

Checklist:

• [x] I have pulled the latest changes in the repository
• [ ] I have squashed my commits
• [ ] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings

[skanda1395]

Consider this as a working draft. Let me know if any changes are required.

[skanda1395]

Changes explanation:

• Since the checkbox has a state moving it to the common components requires passing down the state onlyForWomen to the checkbox and have to update it from there and I thought this was complicated. Also, alignment of those two requires complex CSS in this scenario.
• So, I cut the dropdown component out of common components and put it along side the checkbox.
• Also, I tried the aligning the checkbox to the top-right, but the user experience would be better if we put them together I think.

Do take a look at my changes and let me know what you think.