refactor: converts templates extension to j2 and updates translations.

[Artanias]

• Rename template files from .templ to .j2 extension;
• Update babel.cfg to match new template extension;
• Update version to 0.6.3 in pyproject.toml and all translation files;
• Fix minor typos in English translation strings (missing spaces);
• Update line references in translation files due to code changes.

[github-actions]

Coverage Report

File	Stmts	Miss	Branch	BrPart	Cover	Missing
codeplag
__init__.py	33	31	0	0	6%	5–6, 8–14, 16–17, 19–20, 22–34, 40–43, 45
__main__.py	3	3	2	2	0%	1, 3–4
codeplagcli.py	101	8	20	7	88%	60–61, 63, 427->428, 428, 430->439, 439, 441->442, 442, 445->448, 448, 454->460, 460
config.py	39	0	16	0	100%
consts.py	43	0	0	0	100%
display.py	128	49	38	21	58%	45, 70->71, 71, 99–102, 104, 116, 118–119, 121–124, 126–127, 129, 135, 137–138, 140–143, 145–146, 148, 150, 154, 170–172, 180–181, 188–189, 191, 196–197, 199–200, 202, 206–210, 214–215
featurescache.py	29	6	0	0	79%	31–32, 34, 37–38, 40
getfeatures.py	113	70	48	36	34%	97–100, 102–104, 106–108, 113–116, 118–120, 125, 128–129, 135–137, 163–168, 170, 172, 195–199, 201–204, 207–210, 212–213, 215, 217–218, 220, 240–244, 246–248, 250–251, 254–257, 259–260, 262, 264–265, 267
logger.py	61	33	6	5	43%	28–30, 33, 35, 40–41, 45, 49–51, 58, 62–64, 66, 70–72, 74–77, 79, 85–90, 94–95, 103->104, 104
reporters.py	73	10	20	7	82%	37->40, 40, 42->43, 43, 56->57, 57–58, 63->65, 73->74, 74, 76, 88, 92–93, 98
translate.py	5	1	0	0	80%	10
types.py	143	0	6	0	100%
utils.py	44	44	16	16	0%	1–2, 4, 6, 11–12, 15–17, 20–23, 25–28, 30–35, 37–41, 43–44, 53–54, 56–57, 59–66, 70, 76
codeplag/algorithms
__init__.py	0	0	0	0	100%
compare.py	24	0	2	0	100%
featurebased.py	129	3	76	4	97%	35->36, 36, 71->74, 81->84, 84, 101->102, 102
stringbased.py	56	0	28	1	99%	48->51
tokenbased.py	45	3	20	3	91%	117->118, 118, 136->137, 137, 169->170, 170
codeplag/cplag
__init__.py	0	0	0	0	100%
const.py	9	0	0	0	100%
tree.py	48	4	24	3	90%	32->33, 33–36
utils.py	86	53	30	28	30%	22–24, 37->40, 40->41, 41–42, 61–62, 64–66, 68–69, 71–75, 77–83, 85, 96, 105, 107–108, 110–116, 119, 122–125, 128–132, 134, 137–138, 140–141, 144, 150
codeplag/db
__init__.py	0	0	0	0	100%
mongo.py	113	18	18	6	82%	62–64, 78–83, 85, 92–95, 120->121, 121–122, 180->181, 181–182
codeplag/handlers
__init__.py	0	0	0	0	100%
check.py	208	153	78	68	23%	87–90, 92, 94–95, 97–102, 105, 109–116, 118–122, 124–125, 127, 129, 136–137, 149–150, 153, 155–159, 176–181, 183–185, 187–190, 196–197, 203–207, 216–220, 222–225, 230–239, 242–243, 252, 261–265, 270–281, 286–289, 292–293, 303–305, 307–311, 314, 319–329, 338, 341–343, 346–349, 351–352, 354, 362, 369–373, 379–380, 388–389, 404, 407, 445–448
report.py	216	99	102	51	53%	84–94, 97–99, 108–111, 120–121, 123, 127, 142->143, 143, 149–151, 160->140, 250->251, 251–252, 302–304, 307, 312–316, 320–322, 327–331, 334–336, 338, 350–353, 355–359, 362, 366–371, 395–399, 401–406, 433–436, 438–441, 443–448, 450, 457–459, 461–464, 473
settings.py	22	22	8	8	0%	1–2, 4–5, 7–8, 11–15, 20, 23–30, 32, 34
codeplag/pyplag
__init__.py	0	0	0	0	100%
astwalkers.py	65	7	38	8	85%	23->25, 25–30, 37->38, 38, 39->exit, 81->83
const.py	7	0	0	0	100%
utils.py	100	62	32	30	30%	26–27, 34–35, 42–43, 51–52, 57–59, 72->73, 73–74, 75->76, 76–77, 83, 85–89, 106–107, 109–111, 113–114, 116–119, 121–127, 129, 140, 149, 151–152, 154–159, 162–165, 167, 171, 174–175, 177–178, 181, 187
webparsers
__init__.py	0	0	0	0	100%
async_github_parser.py	175	175	50	50	0%	1–5, 7–12, 14, 24, 27, 52–53, 55, 57, 59–60, 62, 64, 66–67, 69, 71, 79–80, 82, 84–86, 93–95, 97, 99, 104–109, 111, 114–116, 118–124, 126–127, 129–138, 140, 142–146, 148–151, 156–158, 168–169, 171, 173, 175–176, 178, 180, 183, 187, 189–193, 195–200, 209–210, 212, 214, 216, 222, 226–227, 229, 232, 243, 245, 247, 256, 259–266, 274–276, 281, 283, 285, 291, 293, 296–300, 302–303, 305–306, 309, 319–320, 327, 329–330, 338, 344–346, 349–351, 354, 362–363, 368, 370, 374, 380, 382, 385–389, 391, 401–406, 408, 411–412
github_parser.py	184	26	54	10	85%	34->37, 37, 56–58, 63->64, 64, 66->69, 73->74, 74, 77–80, 88–91, 119->122, 122, 148->151, 151, 248->251, 251, 260–262, 347–349, 357->360, 360, 363–364
types.py	63	0	6	0	100%
TOTAL	2365	880	738	364	60%