Bug #1340
Composer related alignments.
- missing 'use'
- folder operations are buggish in standard mode with BOLT_WEB_DIR and 'files' namespace
use the global to ensure the correct path is selected
Merge pull request #1348 from rossriley/file-browse-improvements

use the global to ensure the correct path is selected
Merge pull request #1341 from rixbeck/master

Bug #1340
Removed backticks which were causing PostgreSQL installations to crash
Merge pull request #1354 from victorelu/master

Removed backticks which were causing PostgreSQL installations to crash
Czech translation

all string translated
Merge pull request #1356 from lexislav/master

Czech translation
Optimized usage of composer on travis.

There is a preinstalled version of composer on travis-ci, so we should use it.
But still keeping the `self-update`, but making it failsafe with `|| true`, if getcomposer.org might be down.
Merge pull request #1359 from h4cc/patch-1

Optimized usage of composer on travis.