Update 0500-10-23-tasking-manager.md

Update wording for "Splitting a square" to be more concise, introduce practical examples.
Update 0500-10-23-tasking-manager.md

Update the instructions tab, add in mention of alternative imagery, clarify some project types.
Update 0500-10-23-tasking-manager.md

Add in a general guidance section based on some common errors, how feedback works, how to recover from mistakes and to push the idea it's a collaboration.
under "Project Details": "avaiable imagery" mis-spelled -> "available imagery".

#225
occassions -> occasions

#225 pointed out a minor typo
Merge pull request #226 from CloCkWeRX/patch-1

Tasking manager: Split a square
Merge pull request #227 from CloCkWeRX/patch-2

Tasking manager: improve instructions tab section
Merge pull request #228 from CloCkWeRX/patch-3

Tasking manager: Add an "Hints and Tips" section focused more on the differences to normal editing
Merge pull request #229 from CloCkWeRX/patch-4

under "Project Details": "avaiable imagery" mis-spelled -> "available imagery"
Merge pull request #230 from CloCkWeRX/patch-5

occassions -> occasions
Variety of minor updates

A variety of minor edits; such as

* Fix up earlier unfinished sentence
* Formatting of introduction
* Clarification of terms slightly (#255)
* Examples broken out into blockquotes
* Dot points captialized
Merge pull request #231 from CloCkWeRX/patch-6

Variety of minor updates
Grammar fix
Merge pull request #233 from CloCkWeRX/patch-7

Grammar fix
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages