Add devtools preferences

README.md

 # Firefox
 
-Browser profile
+Browser profile configuration that can be set up directly within profile folders. Configuration is the same across devices and profiles, excepting a few settings adjusted manually.
 
-## Extensions / Scripts
+## Extensions
 
 - Adblock: [uBlock Origin](https://addons.mozilla.org/firefox/addon/ublock-origin/)
 	- Remove cookie banners: <https://www.i-dont-care-about-cookies.eu/abp/>
 
 ## Reference
 
-- <http://kb.mozillazine.org/Profile_folder_-_Firefox>
-- <https://www.userchrome.org/what-is-userchrome-js.html>
-- `user.js`
+- Sample `user.js`
 	- <https://github.com/arkenfox/user.js>
 	- <https://github.com/yokoffing/Betterfox>
 - Styles
-	- <https://www.reddit.com/r/FirefoxCSS/comments/o1ccqe/a_different_way_of_displaying_the_container_color/>
 	- <https://github.com/AveYo/fox>
+	- <https://github.com/MrOtherGuy/firefox-csshacks>
+	- <https://github.com/black7375/Firefox-UI-Fix>
+	- <https://old.reddit.com/r/FirefoxCSS/comments/o1ccqe/a_different_way_of_displaying_the_container_color/>
+	- <https://old.reddit.com/r/FirefoxCSS/comments/osles3/menu_icons/>
+	- <https://old.reddit.com/r/FirefoxCSS/comments/obfa94/lepton_20_context_menu_icons_error_page/>
 - Scripts
+	- <http://kb.mozillazine.org/Profile_folder_-_Firefox>
+	- <https://www.userchrome.org/what-is-userchrome-js.html>
 	- <https://github.com/xiaoxiaoflood/firefox-scripts>
 	- <https://github.com/MrOtherGuy/fx-autoconfig>
 	- <https://greasyfork.org/en/scripts/3187-google-images-direct-link>

user.js

 /* Manual */
 // user_pref("browser.cache.disk.parent_directory", "/run/user/$(id -u)/firefox"); // linux: move disk cache to memory
+// user_pref("mousewheel.default.delta_multiplier_y", 250); // configure scroll speed (vertical)
+// user_pref("mousewheel.default.delta_multiplier_x", 250); // configure scroll speed (horizontal)
 
 /* Startup */
 user_pref("browser.startup.homepage", "https://www.google.ca"); // home page (change)
 user_pref("browser.startup.page", 3); // resume previous session on startup
 user_pref("browser.newtabpage.enabled", false); // blank new tab page
+user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // require memory cache for private browsing
 
 /* Behaviour */
 user_pref("browser.bookmarks.openInTabClosesMenu", false); // opening bookmarks doesn't close menu
 user_pref("browser.urlbar.autoFill.adaptiveHistory.enabled", true); // enable adaptive history
 user_pref("browser.urlbar.shortcuts.quickactions", false); // disable quick actions
 user_pref("browser.urlbar.resultMenu.keyboardAccessible", false); // skip url suggestion menus
-user_pref("findbar.highlightAll", true); // highlight all matches
+user_pref("findbar.highlightAll", true); // highlight all found matches
+
+/* Dev tools */
+user_pref("devtools.command-button-screenshot.enabled", true); // enable screenshot button
+user_pref("devtools.command-button-rulers.enabled", true); // enable ruler button
+user_pref("devtools.debugger.remote-enabled", true); // enable remote debugging
+user_pref("devtools.chrome.enabled", true); // enable debugging browser chrome
+user_pref("devtools.screenshot.audio.enabled", false); // disable screenshot audio
+user_pref("devtools.editor.tabsize", 4); // indent size is 4 spaces
+user_pref("devtools.editor.expandtab", false); // indent with tabs
 
 /* Shutdown */
 // user_pref("privacy.sanitize.sanitizeOnShutdown", true); // clear data on shutdown
 user_pref("browser.urlbar.groupLabels.enabled", false); // hide firefox suggest label
 user_pref("browser.compactmode.show", true); // add compact mode
 user_pref("browser.tabs.tabmanager.enabled", false); // hide tab manager until needed
+user_pref("privacy.userContext.enabled", true); // enable containers
+user_pref("privacy.userContext.ui.enabled", true); // enable containers
 
 /* Downloads */
 // user_pref("browser.download.useDownloadDir", false); // always ask whether to open or save files
 // user_pref("browser.download.always_ask_before_handling_new_types", true); // confirm new file types
 user_pref("browser.download.alwaysOpenPanel", false); // disable automatically opening download panel
 user_pref("browser.download.manager.addToRecentDocs", false); // disable adding downloads to recent documents
-user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // require memory cache for private browsing
 user_pref("browser.download.open_pdf_attachments_inline", true); // force PDFs to open in browser
 user_pref("pdfjs.disabled", false); // enable pdfjs
-user_pref("pdfjs.enableScripting", false); // enable scripts on pdfjs
+user_pref("pdfjs.enableScripting", false); // disable scripts on pdfjs
 
 /* Forms */
 user_pref("signon.autofillForms", false); // don't autofill login pages
 user_pref("app.update.suppressPrompts", true); // disable update warning
 user_pref("browser.urlbar.update2.engineAliasRefresh", true); // allow adding search engines manually
 
-/* Containers */
-user_pref("privacy.userContext.enabled", true); // enable containers
-user_pref("privacy.userContext.ui.enabled", true); // enable containers
-
 /* Fullscreen */
 user_pref("full-screen-api.transition-duration.enter", "0 0");
 user_pref("full-screen-api.transition-duration.leave", "0 0");
 user_pref("general.smoothScroll.msdPhysics.slowdownSpringConstant", 250);
 user_pref("general.smoothScroll.currentVelocityWeighting", 1.0);
 user_pref("general.smoothScroll.stopDecelerationWeighting", 1.0);
-//user_pref("mousewheel.default.delta_multiplier_y", 250);
 
 /* Bloat */
 user_pref("browser.startup.homepage_override.mstone", "ignore"); // disable welcome messages