JSHint: Write some things in dot notation instead

Kills these errors:
lqt.js: line 238, col 15, ['action'] is better written in dot notation.
lqt.js: line 239, col 15, ['threadaction'] is better written in dot notation.
lqt.js: line 923, col 49, ['html'] is better written in dot notation.
lqt.js: line 928, col 47, ['modified'] is better written in dot notation.
lqt.js: line 934, col 58, ['html'] is better written in dot notation.

Change-Id: I09391421ee7947e18252e89c180c5ae4b086a3bf