New option: Always show floating New Post button

.gitignore

CHANGELOG.md

CONTRIBUTORS.md

src/App.js

src/App.vue

...ts/mobile_post_status_button/mobile_post_status_button.js

...s/mobile_post_status_button/mobile_post_status_button.vue

src/components/settings_modal/tabs/general_tab.vue

src/components/shout_panel/shout_panel.vue

src/i18n/en.json

src/modules/config.js