Improve the [bwtrace] shortcode

[bobbingwide]

The output from the [bwtrace] shortcode, which is displayed in the oik trace options admin page is no longer much use.

option=	Processing
none	Displays an image link to the oik trace options admin page plus reset button
view	Displays a link to the most recent browser trace file
reset	Creates the Trace reset button which is used to reset the browser trace file

The link to the trace options page is a rather old image.

Requirement

• Change the bwtrace shortcode

option=	Change?	Processing
none	Yes	Display a button link to the oik trace options admin page. No reset button
view	No	Displays a link to the most recent browser trace file
reset	No	Creates the Trace reset button which is used to reset the browser trace file
logs	Added	Display a summary of the different trace logs

option=logs

Sample output ( from qw/oikcom )

Type	Path	Files	Size	From	To
daily	bwtrace.vt	161	3,956,420	2017-05-17	2018-04-27
browser	bwtraces.loh	1095	1,908,844,717	2018-03-12	2018-04-27
ajax	bwtrace.ajax	969	228,329,472	2018-03-13	2018-04-16
rest	bwtraces.rest	1141	1,544,215,267	2018-03-27	2018-04-16
cli	bwtraces.cli	112	100,209,273	2018-03-11	2018-04-03

• Add a WP-CLI trace logs command- to display the same information as above
• Add a WP-CLI trace delete type --retain=count command to support deletion of files

Proposed solution

Pre-requisite is to move the shortcodes from oik to oik-bwtrace. See https://github.com/bobbingwide/oik/issues/105

[bobbingwide]

Requirements update

• [x] Eliminate trace reset and view options. These dealt with a single trace file. Nowadays there are potentially multiple trace file types and many trace output files
• [x] Do not display the trace logs summary on the front end
• [x] Delete deprecated functions from deprecated.php
• [ ] Deprecate a new set of functions: bw_trace_reset_form()... etc
• [x] Disable the [bwtron] and [bwtroff] shortcodes