Refs #11145

And edit its sphinx doc.

The converted text is stored in separate .rst files in the docs directory.
Refs #9562

Also correct spelling in CopyLogs.cpp .

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>

The wikimaker requires double quotes in the *WIKI* comment.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>

This is more in line with how the new functions work and how the C++
side works too. Refs #970

There is now a single directory called plugins that contains sub-
directories for algorithms & functions. These get installed into the
package under ROOT/plugins/python. This requires new keys to find the
directories and deprecates pythonalgorithms.directories key.

Users will receive warnings about the old key being deprecated and are
instructed about what to do.

Refs #970

(1) Add unit and label to output workspace
(2) Add support to .braw, .bsmo, .ain files
(3) Complete unit test
(4) Make LoadPDFgetNFile a LoadFile algorith.

Add algorithm to create input TableWorkspaces for LeBail fitting from
input data, Fullprof peak parameter file and etc.