Updating french app.po
Fixed french erroneous translations

See #732
French translations of log in/out/etc

See #732 items:

3 - Translate ’Sign out’.
5 - Translate 'Name can't be blank’ on collection/new
9 - Collection: translate name of the fields (possibly incomplete)
"Can't save" French translation

See #732 item 6:
"When trying to create a collection without name -> 'Can't save: Le nom de la couche manque'"
Updated po[t] files to match latest changes
Activities French translations

See #732 items 7 & 8:
- Activities: translate 'Site 'Police Station' changed: 'beds' changed from '56' to 56' y 'Site 'Farmacy X 1' was renamed to 'Farmacy’’, 'Couche 'Main' modifiée : champ text field 'Facility Code' (fcode) name modifié en 'HF TYPE’,’.
- Activities check boxes: translate 'Admin permissions changed’, 'Member permissions changed’, 'Member removed’, 'Member added’, ' Anonymous permissions changed’.

Conflicts:
	app/models/activity.rb
Updated JS French translations

See #723 item 8:
- Activities check boxes: translate 'Admin permissions changed’, 'Member permissions changed’, 'Member removed’, 'Member added’, ' Anonymous permissions changed’

Conflicts:
	app/assets/javascripts/locale/en/app.js
	app/assets/javascripts/locale/fr/app.js
More French translations

See #732 item 10:
- Collection overview: translate ‘Present time’, date of the snapshots, ‘Enter snapshot name’. Translate buttons ‘choose file’ and ‘download sample as csv’.
Field types translations

See #732 item 9:
"Collection: translate name of the fields"
Removing old strings on the app.po
Fix #732 translated into French in land.instedd.org and replaced po
Updating fr/app.po