more replacements + small renames

src/App.scss

src/App.vue

src/components/font_control/font_control.vue

...terface_language_switcher/interface_language_switcher.vue

src/components/poll/poll_form.vue

src/components/post_status_form/post_status_form.vue

src/components/search_bar/search_bar.js

src/components/search_bar/search_bar.vue

src/components/settings_modal/settings_modal_content.js

src/components/settings_modal/settings_modal_content.vue

src/components/settings_modal/tabs/filtering_tab.vue

src/components/settings_modal/tabs/general_tab.vue

src/components/settings_modal/tabs/theme_tab/preview.vue

src/components/settings_modal/tabs/theme_tab/theme_tab.vue

src/components/shadow_control/shadow_control.vue

src/components/tab_switcher/tab_switcher.js

src/components/tab_switcher/tab_switcher.scss

src/components/user_card/user_card.vue