PLT-2992 Added the ability to use different themes for each team (#3411)

* Cleaned up user_settings_theme.jsx and import_theme_modal.jsx

* Made ImportThemeModal use a callback to return the theme to the user settings modal instead of saving it directly

* Moved user theme from model to preferences

* Added serverside API to delete preferences TODO update package with client stuff

* Changed constants.jsx so that Preferences and ActionTypes can be imported on their own

* Updated ThemeProps migration code to properly rename solarized code themes

* Fixed warnings thrown by AppDispatcher

* Added clientside UI to support team-specific themes

* Removed debugging code from test

* Fixed setting a user's theme when they haven't set their theme before

model/preference_test.go

@@ -4,6 +4,7 @@
 package model
 
 import (
+	"encoding/json"
 	"strings"
 	"testing"
 )
@@ -31,7 +32,7 @@ func TestPreferenceIsValid(t *testing.T) {
 
 	preference.Category = PREFERENCE_CATEGORY_DIRECT_CHANNEL_SHOW
 	if err := preference.IsValid(); err != nil {
-		t.Fatal()
+		t.Fatal(err)
 	}
 
 	preference.Name = strings.Repeat("01234567890", 20)
@@ -41,16 +42,48 @@ func TestPreferenceIsValid(t *testing.T) {
 
 	preference.Name = NewId()
 	if err := preference.IsValid(); err != nil {
-		t.Fatal()
+		t.Fatal(err)
 	}
 
-	preference.Value = strings.Repeat("01234567890", 20)
+	preference.Value = strings.Repeat("01234567890", 201)
 	if err := preference.IsValid(); err == nil {
 		t.Fatal()
 	}
 
 	preference.Value = "1234garbage"
 	if err := preference.IsValid(); err != nil {
+		t.Fatal(err)
+	}
+
+	preference.Category = PREFERENCE_CATEGORY_THEME
+	if err := preference.IsValid(); err == nil {
 		t.Fatal()
 	}
+
+	preference.Value = `{"color": "#ff0000", "color2": "#faf"}`
+	if err := preference.IsValid(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestPreferencePreUpdate(t *testing.T) {
+	preference := Preference{
+		Category: PREFERENCE_CATEGORY_THEME,
+		Value:    `{"color": "#ff0000", "color2": "#faf", "codeTheme": "github", "invalid": "invalid"}`,
+	}
+
+	preference.PreUpdate()
+
+	var props map[string]string
+	if err := json.NewDecoder(strings.NewReader(preference.Value)).Decode(&props); err != nil {
+		t.Fatal(err)
+	}
+
+	if props["color"] != "#ff0000" || props["color2"] != "#faf" || props["codeTheme"] != "github" {
+		t.Fatal("shouldn't have changed valid props")
+	}
+
+	if props["invalid"] == "invalid" {
+		t.Fatal("should have changed invalid prop")
+	}
 }