[REQS-436] Removing old dexy files
[REQS-436] Adding rst conversion of "Average Period" quant documentation
[REQS-436] Adding titles to documents
[REQS-436] ToC for OG-Platform documentation
[REQS-436] Adding titles to ToCs
Review titles to allow build
REQS-436 - Review rst fragments structure to allow automated buld
REQS-436 - Review rst fragments structure to allow automated buld
Merge pull request #210 from OpenGamma/topic/REQS-436

Topic/reqs 436