Char Field Length

## Module 1
# Python
first_char_field = fields.Char(string="First Char Field")
# XML
<div id="group1_id">
                        <h2>Title 1</h2>
                        <div class="row mt16 o_settings_container">
                            <div class="o_setting_left_pane">
                                <label for="first_char_field" string="First Char Field"/>
                                <field name="first_char_field" required="1"></field>
                            </div>
                        </div>
                    </div>

## Module 1
# Python
second_char_field = fields.Char(string="Second Char Field")
third_char_field = fields.Char(string="Third Char Field")
# XML
<div id="group2_id">
                        <h2>Title 2</h2>
                        <div class="row mt16 o_settings_container">
                            <div class="o_setting_left_pane">
                                <label for="second_char_field" string="Second Char Field"/>
                                <field name="second_char_field" required="1"></field>

                                <label for="third_char_field"/>
                                <field name="third_char_field" required="1"></field>
                            </div>
                        </div>
                    </div>