config/commands: implemented :setintag <tags> <option>=<value>
container.tags: added TODO entry
container.settings: fix "setintag" with certain settings

To reproduce the bug:
1. type ":setintag * sort ctime" into the console
2. ensure that the directory ~ is untagged and ~/dl is tagged with "*"
3. change directory to ~/dl/
4. press ^R

The result is that ~ is sorted by ctime even though it shouldn't be.
this is because it uses the settings of fm.thisdir rather than it own
settings.

This commit fixes this bug
core.action: make pager_move work in log too (key W)
core.actions: pressing "i" opens ui.pager, not ui.browser.pager

ui.pager makes use of the whole width,
ui.browser.pager "pushes" the main column away to the left.

The former seems more efficient to me for the "i" key.
core.actions: reduce code dupliaction
ext.img_display: more efficient way to draw images

Instead of loading up w3mimgdisplay for each image and killing it
afterwards, we just open it once for the first image and keep it open.
It can receive any number of commands, so we can just keep writing them
into stdin.  Perhaps it even caches the images to save time, I didn't
test that yet.
core.fm: draw images later
doc/ranger.1: put a list of resources at the top
core.actions: update preview when changing file in pager
RANGER! RANGER! HIGH VOLTAGE!
Change name back to "ranger-master" in --version output
config/rc.conf: added ^L keys for pager and taskview
core.fm: fix shell escaping when using feh + "open_all_images"
doc/colorschemes.txt: update
container.file: typo
commands.py: typos

Thanks to niku for the patch.
scope.sh: typo

Thanks to niku for the patch.
data/scope.sh: fix extension matching on uppercase extension

Thanks to niku for the patch.
ranger.1: more exhaustive documentation for :open_with