Change css/less based on user language or preferences language Odoo 10 - alignment

Question

Dears I am using Odoo 10. My requirement is bit different and I am not finding any such questions or answers on any forum. Actually I want to change the alignments of my text and icons based on user language or preferences selected language. I have created a custom module and I am able to use my custom styling. My xml file is as follows:
<odoo>
<data>
<template id="assets_backend" name="project_extend assets" inherit_id="web.assets_backend">
<xpath expr="." position="inside">
<link rel="stylesheet" href="/project_extend/static/src/less/form_view_extra.less"/>
</xpath>
</template>
<record id="project.edit_project" model="ir.ui.view">
<field name="name">project.project.form</field>
<field name="model">project.project</field>
<field name="arch" type="xml">
<form string="Project">
<sheet string="Project">
<field name="analytic_account_id" invisible="1" required="0"/>
<div class="oe_button_box" name="button_box" groups="base.group_user">
<button class="oe_stat_button" name="attachment_tree_view" type="object" icon="fa-files-o">
<field string="Documents" name="doc_count" widget="statinfo"/>
</button>
<button class="oe_stat_button" type="action" attrs="{'invisible':[('use_tasks','=', False)]}"
name="%(project.act_project_project_2_project_task_all)d" icon="fa-tasks">
<field string="Tasks" name="task_count" widget="statinfo" options="{'label_field': 'label_tasks'}"/>
</button>
<button name="toggle_active" type="object"
confirm="(Un)archiving a project automatically (un)archives its tasks and issues. Do you want to proceed?"
class="oe_stat_button" icon="fa-archive">
<field name="active" widget="boolean_button"
options='{"terminology": "archive"}'/>
</button>
</div>
<div class="oe_title">
<h1>
<field name="name" placeholder="Project Name"/>
</h1>
<div name="options_active" class="oe_edit_only">
<div>
<field name="use_tasks" class="oe_inline"/>
<label for="use_tasks" class="oe_inline" string="Tasks"/>
<span attrs="{'invisible':[('use_tasks', '=', False)]}">as </span>
<field name="label_tasks" class="oe_inline oe_input_align" attrs="{'invisible': [('use_tasks', '=', False)]}"/>
</div>
</div>
</div>
<notebook>
<page name="settings" string="Settings">
<group>
<field name="user_id" string="Project Manager"
attrs="{'readonly':[('active','=',False)]}"/>
<field name="privacy_visibility" widget="radio"/>
<field name="partner_id" string="Customer"/>
</group>
<group name="misc">
<group string="Configuration" groups="base.group_no_one">
<field name="sequence" groups="base.group_no_one"/>
</group>
<group string="Time Scheduling" groups="base.group_no_one">
<field name="resource_calendar_id" groups="base.group_no_one"/>
</group>
</group>
</page>
<page name="emails" string="Emails" attrs="{'invisible': [('alias_domain', '=', False)]}">
<group name="group_alias">
<label for="alias_name" string="Email Alias"/>
<div name="alias_def">
<field name="alias_id" class="oe_read_only oe_inline"
string="Email Alias" required="0"/>
<div class="oe_edit_only oe_inline" name="edit_alias" style="display: inline;" >
<field name="alias_name" class="oe_inline"/>#<field name="alias_domain" class="oe_inline" readonly="1"/>
</div>
</div>
<label for="alias_model" string="Incoming Emails create" class="oe_edit_only"/>
<field name="alias_model" class="oe_inline oe_edit_only" nolabel="1"/>
<field name="alias_contact" class="oe_inline oe_edit_only"
string="Accept Emails From"/>
</group>
</page>
</notebook>
</sheet>
<div class="oe_chatter">
<field name="message_follower_ids" widget="mail_followers" help="Follow this project to automatically track the events associated to tasks and issues of this project." groups="base.group_user"/>
</div>
</form>
</field>
</record>
<record id="hr_timesheet.project_invoice_form" model="ir.ui.view">
<field name="name">Inherit project form : Invoicing Data</field>
<field name="model">project.project</field>
<field name="inherit_id" ref="project.edit_project"/>
<field name="priority">24</field>
<field name="arch" type="xml">
<button name="toggle_active" position="before">
<button class="oe_stat_button" name="%(hr_timesheet.act_hr_timesheet_line_by_project)d" type="action" icon="fa-calendar" string="Timesheets" attrs="{'invisible': [('allow_timesheets', '=', False)]}" style="text-align:right"/>
</button>
<field name="user_id" position="after">
<field name="subtask_project_id" groups="base.group_no_one" attrs="{'invisible': [('allow_timesheets', '=', False)]}"/>
</field>
<xpath expr="//div[#name='options_active']" position="inside">
<div>
<field name="allow_timesheets" class="oe_inline" string="Allow timesheets"/>
<label for="allow_timesheets"/>
</div>
</xpath>
</field>
</record>
</data>
</odoo>
As you can see in the beginning I am including stylesheet which is working perfectly. Now I want to compare the user/preferences language. If it is arabic language then stylesheet should be included else if user/preference language is english the the stylesheet should not be included so that the default alignment in odoo should come in effect. Any help is really appreciated.