Update info on Community Fund page

[proletesseract]

Description

Update information on the site about the community fund to recommend people create their proposal on Reddit rather than NavCollab.

Also update the information about how to create a proposal since the CFund UI is launched.

https://navcoin.org/en/community-fund

Motivation

Direct users to post their community fund proposals to reddit to increase social media visibility.

Acceptance Criteria

• Information on Community Fund page is up to date and accurate
• More recent proposals added to the features list.
• Add direction to post on reddit
• Add information about how to create proposals through core and next
• Flag proposal builder tool as only necessary for navcoin-cli

[coreydahodler]

can i do this? new to this but planning on being very involved

[proletesseract]

covered by #291