Bootstrapped Plan Writing and Download pages (#88) ...

* DMPRoadmap/roadmap#issue567
* DMPRoadmap/roadmap#issue561

- Bootstrapped the Write Plan page accordions
- Rebased with latest from CDL-MVP

bootstrapped the phases accordion DMPRoadmap/roadmap#567

added es6 function to provide expand/collapse all functionality. bootstrapped several accordions DMPRoadmap/roadmap#567

finished Bootstrapping write plan accordions DMPRoadmap/roadmap#567

fixed linter issue DMPRoadmap/roadmap#issue567

fixed linter issue

* Bootstrapping and ES6 of the Plan Download page DMPRoadmap/roadmap#561.
- Renamed show_export.html.erb to download.html.erb (updated controller, policy, links and route)
- Renamed export_settings.js to download.js and dropped unused auto-save JS (no longer a part of wireframes)
- Bootstrapped page html

changed name of show_export to download to match UI terminology. Bootstrapped download page

Added ES6 JS for download page and made tweaks to the format

* DMPRoadmap/roadmap#562
edit phases using plan navigation layout

bootstrap plan progress. bootstrap sections header. added togglable section icons for expand/collapse

answers_controller returning a JSON with partial views rendered. Split question types in different partials. Started new answers/status.js

Rename view to edit_plan_answers.html.erb. Load tinymce through ES6 for question answers. Delete old status.js ES5. Added timeago to vendor

fixed broken test regarding answers_controller

* fixed linter issue with CRLF

* fixed tests broken by name change from show_export to download.

reintroduced auto-save functionality to write plan page DMPRoadmap/roadmap#535

Added method to validate answer according to each question format. Partial view for section progress. Eager loading of resources needed to calculate plan and section progress. Refactoring of code for progress plan. DMPRoadmap/roadmap#382 ...

Fixed merge conflict. DMPRoadmap/roadmap#382

onChange event for tinymce at plan answers. Removed unnecessary options passed to tinymce. DMPRoadmap/roadmap#382

Fixed timeago problem for when a new answer is created. Refactored JavaScript logic into its own file. Created a partial to handle answer status. DMPRoadmap/roadmap#355