Mexican Spanish translation: Translates strings still in English language and improves already translated strings.

Various improvements in the the mexican spanish translation.

See merge request !300

Minor usability issues in settings, lead mapping and Potentials mapping

See merge request !299

Fixes #804 - When i try to resize Widget Sale pipeline bug

See merge request !298

Fixes #785 - vt710 - Dashboard size of the widgets is not saved

See merge request !295

French Trad update

French update :)

See merge request !287

# Conflicts:
#	pkg/vtiger/translations/French/modules/Users.php
#	pkg/vtiger/translations/French/modules/Vtiger.php

Fixes #30 - Converting Lead doesn't remove the Lead's Phone information from vti…

Fixes #30 - Converting Lead doesn't remove the Lead's Phone information from vtiger_pbxmanager_phonelookup table

See merge request !294

Fixes #675 - vTiger 6.5 - 7.0.1 migration - Dashboard error

See merge request !293

Fixes #30 - Converting Lead doesn't remove the Lead's Phone information from vtiger_pbxmanager_phonelookup table