[FIX] web: properly parse float with '.' as thousand_sep

In a slightly too naive way, we apparently tried to improve the
parse_float method while rewriting the new views.  This was done by
using a regexp to match all occurences of a thousand separator.

The way the regexp was built was fine, until the thousand separator is a
'.', which, if used as a regexp, matches all characters.  Also, sadly,
'.' is not so rare as a thousand separator...

addons/web/static/src/js/fields/field_utils.js

@@ -415,7 +415,10 @@ function parseDateTime(value, field, options) {
 }
 
 function parseFloat(value) {
-    value = value.replace(new RegExp(core._t.database.parameters.thousands_sep, "g"), '');
+    if (core._t.database.parameters.thousands_sep) {
+        var escapedSep = _.str.escapeRegExp(core._t.database.parameters.thousands_sep);
+        value = value.replace(new RegExp(escapedSep, 'g'), '');
+    }
     value = value.replace(core._t.database.parameters.decimal_point, '.');
     var parsed = Number(value);
     if (isNaN(parsed)) {

addons/web/static/tests/fields/field_utils_tests.js

@@ -101,7 +101,7 @@ QUnit.test('format one2many', function(assert) {
 });
 
 QUnit.test('parse float', function(assert) {
-    assert.expect(6);
+    assert.expect(7);
 
     assert.strictEqual(fieldUtils.parse.float(""), 0);
     assert.strictEqual(fieldUtils.parse.float("0"), 0);
@@ -109,6 +109,16 @@ QUnit.test('parse float', function(assert) {
     assert.strictEqual(fieldUtils.parse.float("-100.00"), -100);
     assert.strictEqual(fieldUtils.parse.float("1,000.00"), 1000);
     assert.strictEqual(fieldUtils.parse.float("1,000,000.00"), 1000000);
+
+    var originalParameters = $.extend(true, {}, core._t.database.parameters);
+    _.extend(core._t.database.parameters, {
+        grouping: [3, 0],
+        decimal_point: ',',
+        thousands_sep: '.'
+    });
+    assert.strictEqual(fieldUtils.parse.float('1.234,567'), 1234.567);
+
+    core._t.database.parameters = originalParameters;
 });
 
 QUnit.test('parse monetary', function(assert) {