[submit_gmx_analyses_lintf2_ether.py]: Set Default of --every to 0

Change default of the --every option from 1 to 0.

The value of the --every option is parsed to the -dt option of the
submitted Gromacs tools.  In the Gromacs documentation
(https://manual.gromacs.org/documentation/2018-current/onlinehelp/gmx-trjconv.html)
it says about the -dt option:

> Only write/use frame when t MOD dt = first time (ps)

However, when -dt is set to 1 and the spacing between frames is less
than 1 ps, not every frame is processed, although t MOD 1 should be 0
for all (integer) values of t.  When setting -dt 0, every frame is
processed (although t MOD 0 should not be defined.  However, 0 is the
default value for -dt according to the docs).

Author: andthum

analysis/lintf2_ether/gmx/submit_gmx_analyses_lintf2_ether.py

@@ -57,7 +57,8 @@
     :file:`${settings}_out_${system}.log`.  Reading from |log_file|\s
     compressed with gzip, bzip2, XZ or LZMA is supported.
 --every
-    Only use frame if t MOD dt == first time (in ps).  Default: ``1``.
+    Only use frame if t MOD every == first time (in ps).  Default:
+    ``0``.
 
 Options for MSD Calculation
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -454,9 +455,9 @@ def _submit(sbatch_opts, job_script):
         "--every",
         type=float,
         required=False,
-        default=1,
+        default=0,
         help=(
-            "Only use frame if t MOD dt == first time (in ps).  Default:"
+            "Only use frame if t MOD every == first time (in ps).  Default:"
             " %(default)s."
         ),
     )