Grammatical and ortographical corrections

Add an API endpoint to edit users

Fix GridFS do not work

Corrected some expressions that sounded strange in Spanish language.

e.g: "Room" is better translated as "Sala" instead of "Habitación" ("Sala" suits better).

Corrected ortographic mistakes.

momentjs:moment upgraded from 2.14.4 to 2.15.0
promise upgraded from 0.8.4 to 0.8.7

jalik:ufs upgraded from 0.6.6 to 0.6.7
momentjs:moment upgraded from 2.14.4 to 2.15.0
promise upgraded from 0.8.4 to 0.8.7

Add reply button to message actions

Add api endpoint to create users

Additionally:
- Returns an error for invalid domains (on registration)
- Moves "insertOrUpdateUser" method code to a function

Add option to hide a custom field from the register form

Include all public rooms and users on spotlight search

Additionally:
- Remove wrong translation for custom fields
- Move save custom field code to function