Various style-related changes

* trailing whitespace
* capitalisation
* remove fluff
* jargone sweep
Edit to bank details

Put these on separate lines: Account holder

Bank or building society

Sort code 

Account number

Roll number for building societies (if needed)
Remove unnecessary adjectives.
More jargon

* drive
* enable
Merge pull request #285 from alphagov/technology-leadership-style-guide-edits

Various style-related changes
Fix spelling
Rewrite to remove duplication and improve
Remove quotes
Replace hypen
Remove quotes
Remove the monolith
Merge pull request #286 from mattedgar/master

Update service manager induction information for 2014
Merge pull request #287 from alphagov/technology-leadership-cleanup

Rewrite to remove duplication and improve
Spelling of reusable
em dash -> en dash
Remove links from header guidance
Update example images to remove links and new logo
Update tax image to new GOV.UK logo
Update tax example
Make feedback link optional