Web+ console: Show count of repeated lines

In order not to fill up the console with identical strings, show
a count of the repeated lines instead.

When the console is cleared, make sure the repeating line is inserted
by resetting the fPreviousText.

Plus a minor style fix.

Change-Id: I408a24e59a04c9e51d4ede3f272f7ca23a19b432
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6206
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Web+ console: Add "Copy" button

Adding a "Copy" button makes the feature discoverable.
If nothing is selected, copy all items.

Change-Id: I2004ceb621628e01018cc90ec80033b3797c4c02
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6212
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Web+: Copy script console items to clipboard

For easier bug reporting.

* Allow multiple selected items
* Copy the selected items to clipboard with ALT+C
* Remove unnecessary horizontal separator
* Adjust spacing around list and button

Change-Id: Ie8fb104b85e95acec92bd6226779d4de7ee11878
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3769
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>

Fix compilation of WebPositive on x86_64

Added a simple window to display console messages (fixes #10410)

Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Fix compilation of WebPositive on x86_64

Added a simple window to display console messages (fixes #10410)

Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>