Transform database locked into a settings

Temporary settings, because it slows down the process since it's
auto-committing. Not everyone has database locked crashes. Permanent fix
is being worked on in the database branch.

resources/language/English/strings.xml

@@ -228,6 +228,7 @@
     <string id="30541">Emby Connect</string>
     <string id="30542">Server</string>
     <string id="30543">Username or email</string>
+    <string id="30544">Enable database locked fix (will slow syncing process)</string>
 
     <!-- dialogs -->
     <string id="30600">Sign in with Emby Connect</string>

resources/lib/utils.py

@@ -97,7 +97,10 @@ def kodiSQL(media_type="video"):
     else:
         dbPath = getKodiVideoDBPath()
 
+    if settings('dblock') == "true":
         connection = sqlite3.connect(dbPath, isolation_level=None, timeout=20)
+    else:
+        connection = sqlite3.connect(dbPath, timeout=20)
     return connection
 
 def getKodiVideoDBPath():

resources/settings.xml

@@ -25,6 +25,7 @@
 	</category>
 
 	<category label="30506"><!-- Sync Options -->
+		<setting id="dblock" type="bool" label="30544" default="false" />
 		<setting id="serverSync" type="bool" label="30514" default="true" />
 		<setting id="incSyncIndicator" label="30507" type="number" default="10" visible="eq(-1,true)" subsetting="true"/>
 		<setting id="limitindex" type="number" label="30515" default="200" option="int" />