Device Manager table does not have tooltips

Device Manager table does not have tooltips. During exploratory testing, we found out that some users have hard time understanding what each column means. To correct this, we would need to add in tooltips for the header of the table. Also, some columns seem to be unnecessary to be in the view - we can keep them in the table but make them hidden by default.

List of tooltips:

• Status: The status of the device
• Enabled: Enable the device to be used as a target
• Alias: Give your target a name to remember. Double click to change.
• IP Address: The IP address of the device
• OS: The Operating System of the device
• OS Version: The version of the OS
• Architecture: Which architecture your device is running on
• Screen size: The screen size of the target device
• App Version: Qt UI Viewer application version

Columns to be hidden:

We hide from view these two: Self ID, Device ID. These two can then be made visible from Columns drop menu, if there is a need.