fixup! software/theia: move pinned version to stack/slapos.cfg

keep old versions for python2

also sort versions and remove comments that make it hard to sort
versions and are not so helpful:
 - we can find the dependents of a package by looking in
  *eggs/*/EGG-INFO/requires.txt
 - nowadays, many python packages no longer have setup.py and wheels
  is becoming standard.

stack/slapos.cfg

@@ -179,8 +179,6 @@ entrypoints = 0.3
 enum34 = 1.1.10
 erp5.util = 0.4.74
 et-xmlfile = 1.0.1
-# need wheel because there is no setup.py
-# (see https://erp5js.nexedi.net/#/bug_module/20221102-1C1B293)
 exceptiongroup = 1.0.0:whl
 feedparser = 6.0.10
 Flask = 1.1.2
@@ -194,7 +192,6 @@ GitPython = 3.1.30
 greenlet = 0.4.17
 h11 = 0.14.0
 h5py = 2.7.1
-idna = 2.9
 idna = 3.3
 igmp = 1.0.4
 Importing = 1.10
@@ -217,8 +214,8 @@ jupyter-core = 4.9.2
 jupyterlab = 0.26.3
 jupyterlab-launcher = 0.3.1
 jupyterlab-pygments = 0.1.2
-lockfile = 0.12.2:whl
 lock-file = 2.0
+lockfile = 0.12.2:whl
 lxml = 4.9.1
 MarkupSafe = 2.0.1
 matplotlib = 2.1.2
@@ -238,7 +235,6 @@ netifaces = 0.10.7
 notebook = 6.1.5
 openpyxl = 2.5.2
 outcome = 1.2.0
-packaging = 16.8
 packaging = 21.3
 pandocfilters = 1.4.3
 paramiko = 2.11.0
@@ -260,13 +256,13 @@ prompt-toolkit = 3.0.19
 psutil = 5.8.0
 ptyprocess = 0.5.1
 py = 1.11.0:whl
+py-mld = 1.0.3
 pyasn1 = 0.4.5
 pycparser = 2.20
 pycurl = 7.43.0
 pydantic = 1.9.1
 pygls = 0.12:whl
 Pygments = 2.9.0
-py-mld = 1.0.3
 PyNaCl = 1.3.0
 pyOpenSSL = 19.1.0
 pyparsing = 3.0.9:whl
@@ -351,17 +347,18 @@ distro = 1.6.0
 feedparser = 5.2.1
 gitdb2 = 2.0.5
 GitPython = 2.1.11
+idna = 2.9
 jsonschema = 3.0.2:whl
+packaging = 16.8
 pyparsing = 2.2.0
 pyrsistent = 0.16.1
 requests = 2.27.1
+selectors34 = 1.2
 smmap = 0.9.0
 smmap2 = 2.0.5
 traitlets = 4.3.3
 Werkzeug = 1.0.1
 wheel = 0.35.1:whl
-# for slapos.core
-selectors34 = 1.2
 
 [versions:sys.version_info < (3,8)]
 MarkupSafe = 1.0