update "change password" section - adjust "part" table description for ephys

Author: Thinh Nguyen

00-ConnectingToDatabase.ipynb

@@ -108,7 +108,7 @@
    "source": [
     "For this workshop, some of the configuration values are pre-filled (e.g. `database.host` already points to the workshop database). Let's complete the configuration by specifying the username and password.\n",
     "\n",
-    "Go ahead and open up the email you received when you signed up for the workshop. The email should contain your username (should be the same as your GitHub account username) and a randomly generated password. If you need the email to be resent, simply visit and signup again at https://datajoint.io/workshop."
+    "Go ahead and enter the username and password of your [datajoint.io](https://datajoint.io) account below."
    ]
   },
   {
@@ -241,7 +241,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "When you signed up for the workshop at https://datajoint.io/workshop, you received a default, randomly generated password to connect to the database. It is recommended that you change this to something that you can remember better. You can do so easily using `dj.set_password` function."
+    "The username and password used to connect to this tutorial database is that of your ***datajoint.io*** account, you can change this password on the [datajoint.io](https://datajoint.io) website. \n",
+    "\n",
+    "You can also directly change this database connection password using the `dj.set_password()` method. This is particularly useful if you are using DataJoint outside of this tutorial, where your ***datajoint.io*** credentials are not used for database connection."
    ]
   },
   {
@@ -327,7 +329,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.7.0"
   }
  },
  "nbformat": 4,

electrophysiology/03-Computed Tables - Completed.ipynb

@@ -2277,7 +2277,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The `-> master` syntax denotes that the `Waveform` part table is foreign key constrained by `Spike` table - i.e. the master table. And the content of the part table is always ingested together with the content of the master table, all in one step (i.e. one `make()` call)."
+    "The `-> master` syntax denotes that the `Waveform` part table is foreign key constrained by `Spike` table - i.e. the master table. The master table drives the ***populate*** logic, and the content of the part table is generally ingested together with the content of the master table, all in one step (i.e. one `make()` call)."
    ]
   },
   {

electrophysiology/03-Computed Tables - Interactive.ipynb

@@ -950,7 +950,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The `-> master` syntax denotes that the `Waveform` part table is foreign key constrained by `Spike` table - i.e. the master table. And the content of the part table is always ingested together with the content of the master table, all in one step (i.e. one `make()` call)."
+    "The `-> master` syntax denotes that the `Waveform` part table is foreign key constrained by `Spike` table - i.e. the master table. The master table drives the ***populate*** logic, and the content of the part table is generally ingested together with the content of the master table, all in one step (i.e. one `make()` call)."
    ]
   },
   {