PLT-4332 Position field for Users (#4632)

* Add User.Position field to store & model.

* GOFMT

* Add Position to user settings.

* Unit tests.

* Add position to profile popup.

* i18n

* Fix log message for invalid position.

* Add Position field attribute to LDAP config.

* Add Position field attribute to SAML config.

* Reword empty position message.

* Change Position Max Length to 35.

* Better invalid position error message.

* Add new fields to config.json.

* Ensure position is never longer than max when displayed.

* Hard limit of 64 chars with soft limit still 35

* Put field with other attributes.

webapp/utils/constants.jsx

@@ -264,7 +264,8 @@ export const Constants = {
         FULLNAME: 'fullname',
         NICKNAME: 'nickname',
         EMAIL: 'email',
-        LANGUAGE: 'language'
+        LANGUAGE: 'language',
+        POSITION: 'position'
     },
 
     ScrollTypes: {
@@ -835,6 +836,7 @@ export const Constants = {
     MAX_NICKNAME_LENGTH: 22,
     MIN_PASSWORD_LENGTH: 5,
     MAX_PASSWORD_LENGTH: 64,
+    MAX_POSITION_LENGTH: 35,
     MIN_TRIGGER_LENGTH: 1,
     MAX_TRIGGER_LENGTH: 128,
     MAX_TEXTSETTING_LENGTH: 1024,