[10.0][MIG] base_report_to_printer (#68)

* Set api.multi for action called as `object` on view

* Merge syleam printers module into base_report_to_printer (#60)

* [IMP] Updated unit tests

* [FIX] Fixed renamed attributes

* [FIX] Remove deleted fields

* [IMP] Add printing.server and printing.job models

* [IMP] Allow to cancel all jobs, enable, and disable printers

* [IMP] Split the cups part of print_document into a new print_file method

* [IMP] Updated cron job to run the action_update_jobs method

* [ADD] Add a migration script to create a printing server from configuration

* [MIG] Migrate base_report_to_printer to v10.0

Removed deprecated methods on printing.printer (replaced by methods on
        printing.server)

* [IMP] Add wkhtmltopdf in travis configuration file

* [FIX] base_report_to_printer: Fix Update Job Cron
* Fix API issue with Update Job Cron
** Forward Port from 9.0

* [FIX] Fixed the res.users view

The string attribute should not be used as a selector, because it is
translatable.

* [FIX] Fixed the print_document method of report

The new API migration was made to @api.multi because of the "cr, uid,
ids" signature, but "ids" was the ids of the records to print here, not
the report's ids.
Also, the new API version of "get_pdf" get directly the ids of the
records to print in the standard module, not a recordset.

* [FIX] UI is now (un)blocked only when using qweb-pdf reports in standard addons

base_report_to_printer/views/printing_server.xml

@@ -0,0 +1,70 @@
+<?xml version="1.0"?>
+<odoo>
+
+    <record model="ir.ui.view" id="printing_server_view_form">
+        <field name="name">printing.server.form</field>
+        <field name="model">printing.server</field>
+        <field name="arch" type="xml">
+            <form string="Servers">
+                <sheet>
+                    <header>
+                        <button name="action_update_printers" type="object" string="Update Printers"/>
+                        <button name="action_update_jobs" type="object" string="Update Jobs"/>
+                    </header>
+                    <div class="oe_title">
+                        <h1>
+                            <field name="name"/>
+                        </h1>
+                    </div>
+                    <group>
+                        <field name="address"/>
+                        <field name="port"/>
+                    </group>
+                    <group>
+                        <separator string="Printers" colspan="2"/>
+                        <field name="printer_ids" nolabel="1"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="printing_server_view_tree">
+        <field name="name">printing.server.tree</field>
+        <field name="model">printing.server</field>
+        <field name="arch" type="xml">
+            <tree string="Servers">
+                <field name="name"/>
+                <field name="address"/>
+                <field name="port"/>
+            </tree>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="printing_server_view_search">
+        <field name="name">printing.server.search</field>
+        <field name="model">printing.server</field>
+        <field name="arch" type="xml">
+            <search string="Servers">
+                <field name="name"/>
+                <field name="address"/>
+                <field name="port"/>
+            </search>
+        </field>
+    </record>
+
+    <record model="ir.actions.act_window" id="printing_server_action">
+        <field name="name">Servers</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">printing.server</field>
+        <field name="view_type">form</field>
+        <field name="view_mode">tree,form</field>
+    </record>
+
+    <menuitem name="Servers"
+        sequence="10"
+        id="printing_server_menu"
+        parent="printing_menu"
+        action="printing_server_action"/>
+
+</odoo>