Add missing 'cd ..' to INSTALL doc

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Add catch-all routes that cover embedded work package details
Adapt activities on details tab to what is displayed on wp#show
WIP added static paths to PathHelper and using them in wp templates.
API authentication now respect application wide login_required setting
Added authorization for API show activity endpoint
Added authorization for API show attachment endpoint
Using static user path in overview header.
Include gon in angular layout
Checking for undefined base app path in PathHelper.
Remove unrendered gon output from work_packages#index
Add specs
Render user preferences to wp#index via gon
Consider ids parameter
Get accessibility mode settings from gon, remove meta tag dependency
Merge pull request #1279 from opf/fix/install-doc-tweaks
Merge pull request #1573 from opf/feature/api-users-show-permissions

API authentication now respects application wide login_required setting
Merge pull request #1575 from opf/feature/api-activities-show-permissions

Added authorization for API show activity endpoint
Don't use a before filter for parsing ids parameter
Merge pull request #1576 from opf/feature/api-attachments-show-permissions

Added authorization for API show attachment endpoint