Merge pull request #39 from harding/formatting

Fix formatting in Wallet section

[Merging formatting-only change after several hours without critical feedback.]
Fix one typo
Fix one anchor link
Merge pull request #40 from harding/formatting

More minor formatting changes
Move Contracts, P2SH and multisig to a separate section
Revised contracts references out of TX Malleability section
Merge pull request #43 from harding/devcontracts

Revised contracts references out of TX Malleability section
Move P2SH/Multisig back under Transaction
Merge pull request #44 from harding/mining

Delete mining section stub
Shorten text about chain forks
Add TODO comment about multisig/P2SH
Merge pull request #46 from saivann/devfork

Shorten text about chain forks
Use "Complex transactions" instead of "Contracts" in the Transaction subsection
Move "Standard transactions" under "P2PH script validation"
Merge pull request #45 from saivann/devcontractsp2sh

Move P2SH/Multisig back under Transaction
Apply small text improvements
Merge pull request #42 from saivann/devcontracts

Move Contracts to a separate section
Add some cross-references
Merge remote-tracking branch 'saivann/dev' into terms

Conflicts:
	en/developer-guide.md
opmodes