Revise section B.1.2.1.4 of conceptual intro

Change unspecified nasal from N to superscript n.

Change-Id: If3b91d5d6b434eaeb82a221f49f0584c59619098
Add sorting to various choosers

Choosers: phonemes, natural classes, environments, inflectional affixes
 (when adding to a slot in a template)

LT-13362, LT-13381, LT-8452

Change-Id: I392231ad907074f412c745cc3183c89c0e138eb8
Irregularly inflected variants not handled correctly in XAmple

LT-15455

Change-Id: Id28845cf248101ebb5299cc397eaf6baa524b548
Fix environ to allow mono to be in /opt/mono-sil

It still defaults to /usr/local and /usr/lib/fieldworks, but uses any
predefined values of the environment variables MONO_PREFIX and
MONO_SILPKGDIR.

Change-Id: I28525603ebff50846494120ddc354ee5b2798012
Merge branch 'develop' into feature/RelatedWords

Conflicts:
	Src/LexText/ParserUI/ParserTraceBase.cs

Change-Id: I732115f18aa196e92be4c4a7422176dcf220ce2a