Replace webview based tags control

[mgaffigan]

Reduces the JavaFX based WebView + JQuery + Swing tags control to only use swing. I think the prior webview design was to "test the waters" for using WebView and JFX, not as an actual requirement.

Performance impact is good. Drops idle CPU usage from ~2% to ~0.2%, drops memory usage by ~100 MB. Improves MacOS "power score" for the application by 88% - so there should be some benefit to battery life.

# JFX + Swing
PID    COMMAND      %CPU TIME     #TH  #WQ  #POR MEM   PURG   CMPRS PGRP  PPID  STATE    BOOSTS       %CPU_ME  %CPU_OTHRS UID  FAULTS  COW   MSGSENT MSGREC SYSBSD  SYSMACH  CSW     PAGEI IDLE POWE INSTRS     CYCLES     JETP USER      #MRE RPRV VPRV VSIZ KPRV KSHR
81628  java         1.7  00:22.42 69   6    603  705M- 0B     205M+ 23046 23046 sleeping *0[53]       0.00000  0.00000    501  131305+ 1240  222671+ 74193+ 406468+ 1053894+ 292558+ 2893  0    1.7  23205203   31604071   180  mgaffigan N/A  N/A  N/A  N/A  N/A  N/A

# Swing only
PID    COMMAND      %CPU TIME     #TH  #WQ  #POR MEM   PURG   CMPRS PGRP  PPID  STATE    BOOSTS      %CPU_ME %CPU_OTHRS UID  FAULTS COW  MSGSENT MSGREC SYSBSD  SYSMACH CSW     PAGE IDLE POWE INSTRS     CYCLES    JETP USER      #MRE RPRV VPRV VSIZ KPRV KS
73675  java         0.2  00:15.26 60   6    557  594M 0B   476M+ 23046 23046 sleeping *0[64]     0.00000 0.00000    501  77644+ 1068 156512 62181 272044+ 651105 163880+ 215  0    0.2  2365380 5108003 180  mgaffigan N/A  N/A  N/A  N/A  N/A  N/A

Also includes a drive-by fix for a bug where tag colors would oscillate on refresh if you had a channel and tag named the same thing.

Old	New

Not a direct fix, but would close #434

[github-actions]

Test Results

121 files  ±0  121 suites  ±0   1m 47s ⏱️ +5s
677 tests ±0  677 ✅ ±0  0 💤 ±0  0 ❌ ±0 
689 runs  ±0  689 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 71906cf. ± Comparison against base commit c93b0f0.