Visualization: improve look of the 'author' web app

[jnareb]

Adjust style, use better titles and labels, add page header

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/diffannotator
__init__.py	0	0	100%
annotate.py	823	136	83%	52, 75–76, 85, 92, 101–104, 106–108, 110, 368–369, 373–374, 376, 413, 415–417, 419, 421–423, 425–426, 428–430, 528, 531, 534–535, 577, 727, 756, 799–801, 805, 836, 914, 1149, 1163–1166, 1168, 1172–1175, 1177, 1354, 1357, 1526, 1528, 1565, 1582–1583, 1669, 1672, 1784–1785, 1787, 1804, 1846–1847, 1859–1860, 1863, 1878, 1893–1894, 1925, 1988, 1999, 2025, 2035, 2037, 2046–2050, 2054–2058, 2060, 2086, 2173, 2187, 2189–2190, 2192–2194, 2196, 2198–2200, 2202–2203, 2205, 2207, 2221, 2224, 2239–2241, 2247, 2260, 2269, 2277, 2280, 2350, 2356, 2358–2359, 2372, 2381–2386, 2500–2501, 2504–2505, 2509, 2554
config.py	50	7	86%	52–56, 58, 93
gather_data.py	344	53	84%	61, 87, 91, 93, 101, 106, 108, 121, 129, 161, 228–229, 232–233, 236, 239, 248, 259–265, 288–289, 309–310, 325, 343, 365–366, 531, 535, 568, 696, 709, 711, 714, 718, 720, 758, 784–785, 838, 890, 1076, 1108–1112, 1116
generate_patches.py	38	3	92%	102, 104, 126
languages.py	101	16	84%	170, 173, 176, 179, 182, 186, 217–218, 230, 249, 261, 263–264, 267, 273, 311
lexer.py	29	2	93%	87–88
src/diffannotator/utils
__init__.py	0	0	100%
git.py	487	85	82%	107, 233, 316, 318, 321–322, 324, 326–329, 331–333, 335–337, 342–343, 347, 349–350, 354–356, 358–359, 361–362, 364–365, 367, 475–476, 479, 516, 526, 529–531, 537, 568, 572, 579, 603, 616, 671, 753, 800, 807, 837, 841, 845, 885, 887, 898, 903, 908, 999–1000, 1047–1049, 1052–1053, 1087, 1091, 1157, 1162, 1164, 1167–1168, 1170, 1229–1230, 1344, 1346, 1369–1370, 1382, 1384, 1396–1397, 1431, 1445
TOTAL	1872	302	83%

Tests	Skipped	Failures	Errors	Time
81	8 💤	0 ❌	0 🔥	8.161s ⏱️