Adding raw intermediate "edit in detail" chapter + images

Proof reading needed!
revised intermediate adv. editing for grammar
Merge pull request #77 from skorasaurus/intermediate

revised intermediate 'editing in detail' page for grammar
First row version of intermediate "Conflict Resolution" chapter

Images included.
Proof reading needed!
Use italic for captions in "Conflit Resolution"
First raw version of "Quality Assurance" chapter, including images

Need proof reading.
Add a dummy Intermediate's guide introduction, to be filled
Add proper Intermediate Guide introduction
Prepare for French translation of intermediate guides
Change French intermediate guides metadata
Adding preface to the advance guide
Initial markdown conversion of advance postgis-configuration chapter
bullet formats
ignore .DS_Store
initial markdown of advance-postgis chapter
initial markdown of advance-mapbox chapter
initial markdown of advance-github chapter
initial markdown of advance-wms chapter
initial markdown of advance-sds chapter
advance all-chapters