Fix wakatime api url & api key validation (#37)

* Fix wakatime API base URL (#35)

* Fix API key validation to allow longer keys

Author: OndraM

configdialog.ui

@@ -57,7 +57,7 @@
     </rect>
    </property>
    <property name="maxLength">
-    <number>36</number>
+    <number>41</number>
    </property>
    <property name="showClearButton" stdset="0">
     <bool>true</bool>

wakatimeplugin.cpp

@@ -57,7 +57,7 @@ K_PLUGIN_FACTORY_WITH_JSON(WakaTimePluginFactory,
                            registerPlugin<WakaTimePlugin>();)
 
 const QString kUrlHeartsBulk =
-    QStringLiteral("%1/v1/users/current/heartbeats.bulk");
+    QStringLiteral("%1users/current/heartbeats.bulk");
 
 const QString kSettingsKeyApiKey = QStringLiteral("settings/api_key");
 const QString kSettingsKeyApiUrl = QStringLiteral("settings/api_url");
@@ -225,7 +225,7 @@ void WakaTimeView::slotConfigureWakaTime() {
     dialog.setWindowTitle(i18n("Configure WakaTime"));
     if (dialog.exec() == QDialog::Accepted) {
         QString newApiKey = ui.lineEdit_apiKey->text();
-        if (newApiKey.size() == 36) {
+        if (newApiKey.size() >= 36 && newApiKey.size() <= 41) {
             apiKey = newApiKey;
         }
         hideFilenames = ui.checkBox_hideFilenames->isChecked();
@@ -534,7 +534,7 @@ void WakaTimeView::readConfig(void) {
         return;
     }
 
-    QString url = QStringLiteral("https://wakatime.com/api");
+    QString url = QStringLiteral("https://api.wakatime.com/api/v1/");
     if (config->contains(kSettingsKeyApiUrl) &&
         QString(config->value(kSettingsKeyApiUrl).toString())
             .trimmed()