Add missing 'cd ..' to INSTALL doc

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Got rid of composition in API activity model
Render activity detail for comment too
Got rid of user's inline attribute in activity resource
Fix watchers-container height in details-panel

- fixed watchers-container height in details-panel
Merge pull request #1570 from opf/fix/watchers-container-in-details-panel

Fix watchers-container height in details-panel
Merge pull request #1565 from opf/feature/api-activities-fixes

Feature/api activities fixes
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.
Checking for undefined base app path in PathHelper.
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
Merge pull request #1576 from opf/feature/api-attachments-show-permissions

Added authorization for API show attachment endpoint
Created tmp/test directory
Merge branch 'dev' of github.com:opf/openproject into dev
Reverted insult to Till's naming convention.