QGtkStyle (needed for Proview-R) support in qt4 needs glib.
However, config script for qt4 is written in such a way that if glib is not
requested but QGtkStyle is requested, it just silently turns QGtkStyle off.

On the other hand, if glib is requested explicitly, then if script fails to
enable QGtkStyle it reports an error properly.
I think it was a bug in qt4 error reporting mechanism that made compilation go
smoothly even though requested QGtkStyle was never provided.
Nobody will fix it now though.

Anyway, this commit properly enables glib and fights with everything that rises
up as a result of this, leading to successfull QGtkStyle support.

https:// link just works more reliably as I found after several timeouts.

But I still have no idea why the second db folder spawns right inside
the frst one.

straighetend the configs:
no more custom source packages
using xvfb for proview compilation (easier)
fix bug with pwr pre-build process killing itself

Go1.15 is incremental improvement over Go1.14 with better compiler and runtime:

https://blog.golang.org/go1.15
https://golang.org/doc/go1.15

Don't drop support for Go1.13 yet, as that (no longer supported) Go
release is still being used by replication-manager and restic
components.

Remain default at Go1.14 yet.

Switch helloworld to Go1.15 and test this patch on that
software-release.

Going Go1.14.10 -> Go1.14.12 brings in runtime and security fixes:

https://golang.org/doc/devel/release.html#go1.14

Tested on helloworld SR.

See merge request nexedi/slapos!860

When invoking tests with setup.py test, missing eggs are installed before
running tests, using their latest available version, but we want to always
install eggs using buildout and using pinned versions.

The section template-slapuser-script creates the "bin/slapos" wrapper
which is needed inside runner-import.sh script.

Otherwise it's almost impossible to check for which node statistics are shown.

Fixes 8d5910dc

Limit stats to frontend entries only, as they are the most important for the
frontend operator, and also having thousands of entries makes the stats page
unusable.

fixes 8d5910dc

Despite the introspection has replaced old style Caddy-based log-access, some
bits were not removed, so remove then now.

fixes 0c830c4c

It was done in frontend partition, but missed in kedifa.

fixes 3469e864

This reverts commit 5d46a499.

Changes to "fix argument parsing" (to allow passing argument containing space)
had a regression that backslash characters are escaped.

Let's go back to slapos.toolbox 0.112 for now.

When updating existing instance, running slapos node instance failed with:

    ln: failed to create symbolic link '/srv/slapgrid/slappart9/srv/frontend-static/logo.png': File exists

This fixes by doing nothing if logo.png already exists

In nexedi/slapos@74d18b9d I switched ERP5 to use caucase certificate, but caucase is not yet usable for this and this caused issues with upgrading existing instances.

We'll maybe try caucase again here, in that case 620c9332 can be reverted if we want to reuse some parts of what was made.

See merge request nexedi/slapos!857

Revert "software/erp5: use a caucase managed certificate for balancer"

This reverts commit 74d18b9d and also follow
up fixup ( 555b26a2 ).

We are not ready to use caucase here, there are still too many problems with
caucase (keys are lost at each SR update etc) and design might still evolve,
so let's go back to self signed certificate for now.

Also remove the promise and the updater, since they are also not working and
causing problems on instances that have been updated (and where the key no
longer match the certificate)