Change all '1' (warn) flags to '0' in eslint.

This changes all warn flags to no-warn because warn flags currently
are not tracked nor monitored by the linter but do show up on a
line-by-line basis in text editors using the eslint plugin which
ends up causing a lot of noise.

.eslintrc.json

@@ -95,14 +95,14 @@
         "emoji_codes": false
     },
     "rules": {
-        "no-restricted-syntax": 1,
-        "no-nested-ternary": 1,
-        "spaced-comment": 1,
-        "space-infix-ops": 1,
-        "newline-per-chained-call": 1,
-        "no-whitespace-before-property": 1,
-        "padded-blocks": 1,
-        "space-in-parens": 1,
+        "no-restricted-syntax": 0,
+        "no-nested-ternary": 0,
+        "spaced-comment": 0,
+        "space-infix-ops": 0,
+        "newline-per-chained-call": 0,
+        "no-whitespace-before-property": 0,
+        "padded-blocks": 0,
+        "space-in-parens": 0,
         "eol-last": ["error", "always"],
         "no-unneeded-ternary": ["error", { "defaultAssignment": false }],
         "no-case-declarations": "error",
@@ -129,12 +129,12 @@
         "template-curly-spacing": "error",
         //The Zulip codebase complies partially with the "no-useless-escape" rule; only regex expressions haven't been updated yet.
         //Updated regex expressions are currently being tested in casper files and will decide about a potential future enforcement of this rule.
-        "no-useless-escape": 1,
+        "no-useless-escape": 0,
         "func-style": ["off", "expression"],
         "wrap-iife": ["error", "outside", { "functionPrototypeMethods": false }],
         "no-new-func": "error",
         "space-before-function-paren": ["error", { "anonymous": "always", "named": "never", "asyncArrow": "always" }],
-        "no-param-reassign": 1,
+        "no-param-reassign": 0,
         "prefer-spread": "error",
         "arrow-spacing": ["error", { "before": true, "after": true }],
         "no-alert": 2,
@@ -149,7 +149,7 @@
             "exports": "always-multiline",
             "functions": "never"
         }],
-        "no-console": 1,
+        "no-console": 0,
         "no-control-regex": 2,
         "no-debugger": 2,
         "no-div-regex": 2,
@@ -186,7 +186,7 @@
         "no-ternary": 0,
         "no-self-compare": 2,
         "no-sync": 2,
-        "no-underscore-dangle": 1,
+        "no-underscore-dangle": 0,
         "no-loop-func": 2,
         "no-labels": 2,
         "no-unused-vars": ["error", { "vars": "local", "args": "after-used",
@@ -197,13 +197,13 @@
         "no-iterator": 2,
         "no-mixed-requires": [0, false],
         "no-extra-parens": ["error", "functions"],
-        "no-shadow": 1,
+        "no-shadow": 0,
         "no-use-before-define": 2,
         "no-redeclare": 2,
         "no-regex-spaces": 2,
         "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
         "block-scoped-var": 2,
-        "camelcase": 1,
+        "camelcase": 0,
         "complexity": [0, 4],
         "curly": 2,
         "dot-notation": 2,
@@ -221,7 +221,7 @@
         "new-cap": ["error", { "newIsCap": true, "capIsNew": false }],
         "new-parens": 2,
         "one-var": ["error", "never"],
-        "quotes": [1, "single"],
+        "quotes": [0, "single"],
         "quote-props": ["error", "as-needed", { "keywords": false, "unnecessary": true, "numbers": false }],
         "radix": 2,
         "semi": 2,
@@ -235,7 +235,7 @@
             }
         }],
         "space-before-blocks": 2,
-        "strict": 1,
+        "strict": 0,
         "unnecessary-strict": 0,
         "use-isnan": 2,
         "valid-typeof": ["error", { "requireStringLiterals": true }],