* Update to cflinuxfs4 & CircleCI images

* Adding STACK & original elixir buildpack

* Update gitignore file to exclude erlang compile folders

* Tune and style challenges filter

* Fine tune date selection logic

* Further tuning filter module for accessibility

* 1. Put form and guidance text in a container div, 2. Updated guidance text, 3. Added aria-label to Keyword or phrase textbox, 4. Corrected orphaned form labels

* Adjust filter full text search to index only on title, tagline, and brief_description

* Remove the word phrase from the filter module and add double quotes to the word 'clear'

* Addressed orphaned form labels

* Make spacing and alignment adjustments requested by Marni

* Restore grey bg that horizontally spans page beneath filter module

* Fix clear button on mobile

* Address additional orphaned form labels for accessibility

* Cherry-picked and merged filter code from staging

* Applied USWDS 2.14.0 styles to filter module

* Added pad above guidance text in filter module

---------

Co-authored-by: jdonis <[email protected]>

* Rename imported prize calculation function

* mix format

convert some bootstrap buttons to usa-buttons by Ryan

Revert "convert some bootstrap buttons to usa-buttons"

1. Moved filter guidance above filter and centered 2. Adjusted multi-select 3. Fixed multi-select issue caused by variance between display and value 4. tuned clear button position for mobile

Removed semicolon from github side for end of ChallengeTiles.js which prevented successful build on main

…lculation

Jdonis/chal 1012 analytics prize calculation

* removed semicolon from end of ChallengeTiles.js which prevent successful build on main

* tuned code for linting issue

Bumps [semver](https://github.com/npm/node-semver) from 5.7.1 to 5.7.2.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/v5.7.2/CHANGELOG.md)
- [Commits](npm/node-semver@v5.7.1...v5.7.2)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>